11312212120 has 64 divisors (see below), whose sum is σ = 28723831200. Its totient is φ = 3971681280.

The previous prime is 11312212073. The next prime is 11312212127. The reversal of 11312212120 is 2121221311.

It is a super-2 number, since 2×11312212120² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11312212094 and 11312212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312212127) 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, 430509 + ... + 456028.

Almost surely, 2^11312212120 is an apocalyptic number.

11312212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11312212120 is an abundant number, since it is smaller than the sum of its proper divisors (17411619080).

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

11312212120 is a wasteful number, since it uses less digits than its factorization.

11312212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886588 (or 886584 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11312212120 its reverse (2121221311), we get a palindrome (13433433431).

The spelling of 11312212120 in words is "eleven billion, three hundred twelve million, two hundred twelve thousand, one hundred twenty".