11312320122 has 24 divisors (see below), whose sum is σ = 24686363520. Its totient is φ = 3743644680.

The previous prime is 11312320091. The next prime is 11312320157. The reversal of 11312320122 is 22102321311.

11312320122 is a `hidden beast` number, since 11 + 312 + 320 + 1 + 22 = 666.

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 = 11312320095 and 11312320104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2258154 + ... + 2263157.

It is an arithmetic number, because the mean of its divisors is an integer number (1028598480).

Almost surely, 2^11312320122 is an apocalyptic number.

11312320122 is an abundant number, since it is smaller than the sum of its proper divisors (13374043398).

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

11312320122 is a wasteful number, since it uses less digits than its factorization.

11312320122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521458 (or 4521455 counting only the distinct ones).

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

Adding to 11312320122 its reverse (22102321311), we get a palindrome (33414641433).

The spelling of 11312320122 in words is "eleven billion, three hundred twelve million, three hundred twenty thousand, one hundred twenty-two".