121551056162 has 16 divisors (see below), whose sum is σ = 185856829560. Its totient is φ = 59599892352.

The previous prime is 121551056161. The next prime is 121551056183. The reversal of 121551056162 is 261650155121.

It can be written as a sum of positive squares in 4 ways, for example, as 98665720321 + 22885335841 = 314111^2 + 151279^2 .

It is not an unprimeable number, because it can be changed into a prime (121551056161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57803 + ... + 496430.

Almost surely, 2^121551056162 is an apocalyptic number.

121551056162 is a deficient number, since it is larger than the sum of its proper divisors (64305773398).

121551056162 is a wasteful number, since it uses less digits than its factorization.

121551056162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556357.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 121551056162 in words is "one hundred twenty-one billion, five hundred fifty-one million, fifty-six thousand, one hundred sixty-two".