121632455123 has 4 divisors (see below), whose sum is σ = 121633644168. Its totient is φ = 121631266080.

The previous prime is 121632455071. The next prime is 121632455137. The reversal of 121632455123 is 321554236121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321554236121 = 181 ⋅1776542741.

It is a cyclic number.

It is not a de Polignac number, because 121632455123 - 2³⁶ = 52912978387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121632055123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424961 + ... + 651042.

It is an arithmetic number, because the mean of its divisors is an integer number (30408411042).

Almost surely, 2^121632455123 is an apocalyptic number.

121632455123 is a deficient number, since it is larger than the sum of its proper divisors (1189045).

121632455123 is a wasteful number, since it uses less digits than its factorization.

121632455123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189044.

The product of its digits is 43200, while the sum is 35.

The spelling of 121632455123 in words is "one hundred twenty-one billion, six hundred thirty-two million, four hundred fifty-five thousand, one hundred twenty-three".