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12120211000221 = 34040070333407
BaseRepresentation
bin1011000001011111010011…
…0111110000101110011101
31120220200101100021122011220
42300113310313300232131
53042034143004001341
641435540441003553
72360441061445632
oct260276467605635
946820340248156
1012120211000221
113953175155575
121438b8a1835b9
1369bc1451314c
142dc89ad6c189
1516041b6a4a66
hexb05f4df0b9d

12120211000221 has 4 divisors (see below), whose sum is σ = 16160281333632. Its totient is φ = 8080140666812.

The previous prime is 12120211000217. The next prime is 12120211000229. The reversal of 12120211000221 is 12200011202121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12120211000221 - 22 = 12120211000217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120211000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120211000229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020035166701 + ... + 2020035166706.

It is an arithmetic number, because the mean of its divisors is an integer number (4040070333408).

Almost surely, 212120211000221 is an apocalyptic number.

It is an amenable number.

12120211000221 is a deficient number, since it is larger than the sum of its proper divisors (4040070333411).

12120211000221 is an equidigital number, since it uses as much as digits as its factorization.

12120211000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040070333410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12120211000221 its reverse (12200011202121), we get a palindrome (24320222202342).

The spelling of 12120211000221 in words is "twelve trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one", and thus it is an aban number.

Divisors: 1 3 4040070333407 12120211000221