356662552121 has 2 divisors, whose sum is σ = 356662552122. Its totient is φ = 356662552120.

The previous prime is 356662552087. The next prime is 356662552273. The reversal of 356662552121 is 121255266653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264258711721 + 92403840400 = 514061^2 + 303980^2 .

It is a cyclic number.

It is not a de Polignac number, because 356662552121 - 2²⁶ = 356595443257 is a prime.

It is not a weakly prime, because it can be changed into another prime (356662552621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178331276060 + 178331276061.

It is an arithmetic number, because the mean of its divisors is an integer number (178331276061).

Almost surely, 2^356662552121 is an apocalyptic number.

It is an amenable number.

356662552121 is a deficient number, since it is larger than the sum of its proper divisors (1).

356662552121 is an equidigital number, since it uses as much as digits as its factorization.

356662552121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The spelling of 356662552121 in words is "three hundred fifty-six billion, six hundred sixty-two million, five hundred fifty-two thousand, one hundred twenty-one".