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12012122010020 = 22511217989275929
BaseRepresentation
bin1010111011001100101001…
…0000111111000110100100
31120112100101102210000102112
42232303022100333012210
53033301311213310040
641314143114500152
72346563403261416
oct256631220770644
946470342700375
1012012122010020
1139113487a0400
121420043434658
13691979c03192
142d75658ba9b6
1515c6e2242365
hexaecca43f1a4

12012122010020 has 72 divisors (see below), whose sum is σ = 27728796190200. Its totient is φ = 4367785720320.

The previous prime is 12012122009999. The next prime is 12012122010067. The reversal of 12012122010020 is 2001022121021.

Adding to 12012122010020 its reverse (2001022121021), we get a palindrome (14013144131041).

12012122010020 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 2054916516004 + 9957205494016 = 1433498^2 + 3155504^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12012122009977 and 12012122010004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43395416 + ... + 43671344.

Almost surely, 212012122010020 is an apocalyptic number.

12012122010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012122010020 is an abundant number, since it is smaller than the sum of its proper divisors (15716674180180).

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

12012122010020 is a wasteful number, since it uses less digits than its factorization.

12012122010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293949 (or 293936 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The spelling of 12012122010020 in words is "twelve trillion, twelve billion, one hundred twenty-two million, ten thousand, twenty".