11312122312 has 16 divisors (see below), whose sum is σ = 21224553840. Its totient is φ = 5652241296.

The previous prime is 11312122309. The next prime is 11312122387. The reversal of 11312122312 is 21322121311.

It is a super-2 number, since 2×11312122312² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11312122312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464878 + ... + 488605.

It is an arithmetic number, because the mean of its divisors is an integer number (1326534615).

Almost surely, 2^11312122312 is an apocalyptic number.

It is an amenable number.

11312122312 is a deficient number, since it is larger than the sum of its proper divisors (9912431528).

11312122312 is a wasteful number, since it uses less digits than its factorization.

11312122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954972 (or 954968 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 11312122312 its reverse (21322121311), we get a palindrome (32634243623).

The spelling of 11312122312 in words is "eleven billion, three hundred twelve million, one hundred twenty-two thousand, three hundred twelve".