121922631 has 16 divisors (see below), whose sum is σ = 184036320. Its totient is φ = 79747200.

The previous prime is 121922611. The next prime is 121922651. The reversal of 121922631 is 136229121.

121922631 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 22 + 631 = 666.

121922631 is nontrivially palindromic in base 16.

It is an interprime number because it is at equal distance from previous prime (121922611) and next prime (121922651).

It is not a de Polignac number, because 121922631 - 2¹⁵ = 121889863 is a prime.

It is a super-2 number, since 2×121922631² = 29730255899924322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121922595 and 121922604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121922611) 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, 41170 + ... + 44031.

It is an arithmetic number, because the mean of its divisors is an integer number (11502270).

Almost surely, 2^121922631 is an apocalyptic number.

121922631 is a deficient number, since it is larger than the sum of its proper divisors (62113689).

121922631 is an equidigital number, since it uses as much as digits as its factorization.

121922631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85263 (or 85257 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 121922631 is about 11041.8581316733. The cubic root of 121922631 is about 495.8627012774.

The spelling of 121922631 in words is "one hundred twenty-one million, nine hundred twenty-two thousand, six hundred thirty-one".