121350556401 has 16 divisors (see below), whose sum is σ = 162426471168. Its totient is φ = 80587612800.

The previous prime is 121350556361. The next prime is 121350556471. The reversal of 121350556401 is 104655053121.

It is not a de Polignac number, because 121350556401 - 2⁶ = 121350556337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121350556471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6687621 + ... + 6705741.

It is an arithmetic number, because the mean of its divisors is an integer number (10151654448).

Almost surely, 2^121350556401 is an apocalyptic number.

It is an amenable number.

121350556401 is a deficient number, since it is larger than the sum of its proper divisors (41075914767).

121350556401 is a wasteful number, since it uses less digits than its factorization.

121350556401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26632.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 121350556401 in words is "one hundred twenty-one billion, three hundred fifty million, five hundred fifty-six thousand, four hundred one".