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12013030203220 = 2251494031218189
BaseRepresentation
bin1010111011010000000001…
…1001011101111101010100
31120112102201201201000021201
42232310000121131331110
53033310141213000340
641314413200322244
72346625041633124
oct256640031357524
946472651630251
1012013030203220
1139117744093a2
121420257613384
13691a93107bc7
142d761036ac84
1515c746d3b79a
hexaed0065df54

12013030203220 has 24 divisors (see below), whose sum is σ = 25396674597000. Its totient is φ = 4772962334592.

The previous prime is 12013030203151. The next prime is 12013030203221. The reversal of 12013030203220 is 2230203031021.

12013030203220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14205302596 + 11998824900624 = 119186^2 + 3463932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013030203221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015606115 + ... + 2015612074.

It is an arithmetic number, because the mean of its divisors is an integer number (1058194774875).

Almost surely, 212013030203220 is an apocalyptic number.

12013030203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013030203220 is an abundant number, since it is smaller than the sum of its proper divisors (13383644393780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12013030203220 is a wasteful number, since it uses less digits than its factorization.

12013030203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031218347 (or 4031218345 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12013030203220 its reverse (2230203031021), we get a palindrome (14243233234241).

The spelling of 12013030203220 in words is "twelve trillion, thirteen billion, thirty million, two hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 149 298 596 745 1490 2980 4031218189 8062436378 16124872756 20156090945 40312181890 80624363780 600651510161 1201303020322 2402606040644 3003257550805 6006515101610 12013030203220