10123312122 has 80 divisors (see below), whose sum is σ = 28281033792. Its totient is φ = 2629428480.

The previous prime is 10123312097. The next prime is 10123312139. The reversal of 10123312122 is 22121332101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10123312095 and 10123312104.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 393303 + ... + 418250.

Almost surely, 2^10123312122 is an apocalyptic number.

10123312122 is an abundant number, since it is smaller than the sum of its proper divisors (18157721670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10123312122 is a wasteful number, since it uses less digits than its factorization.

10123312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811585 (or 811576 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10123312122 its reverse (22121332101), we get a palindrome (32244644223).

The spelling of 10123312122 in words is "ten billion, one hundred twenty-three million, three hundred twelve thousand, one hundred twenty-two".