356254820121 has 16 divisors (see below), whose sum is σ = 477508123520. Its totient is φ = 236252574720.

The previous prime is 356254820111. The next prime is 356254820143. The reversal of 356254820121 is 121028452653.

It is not a de Polignac number, because 356254820121 - 2³⁴ = 339074950937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 356254820121.

It is not an unprimeable number, because it can be changed into a prime (356254820111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10381131 + ... + 10415391.

It is an arithmetic number, because the mean of its divisors is an integer number (29844257720).

Almost surely, 2^356254820121 is an apocalyptic number.

It is an amenable number.

356254820121 is a deficient number, since it is larger than the sum of its proper divisors (121253303399).

356254820121 is a wasteful number, since it uses less digits than its factorization.

356254820121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52416.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 356254820121 in words is "three hundred fifty-six billion, two hundred fifty-four million, eight hundred twenty thousand, one hundred twenty-one".