11312412220 has 96 divisors (see below), whose sum is σ = 25163913600. Its totient is φ = 4265124864.

The previous prime is 11312412203. The next prime is 11312412247. The reversal of 11312412220 is 2221421311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7038657 + ... + 7040263.

It is an arithmetic number, because the mean of its divisors is an integer number (262124100).

Almost surely, 2^11312412220 is an apocalyptic number.

11312412220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11312412220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12581956800).

11312412220 is an abundant number, since it is smaller than the sum of its proper divisors (13851501380).

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

11312412220 is a wasteful number, since it uses less digits than its factorization.

11312412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1925 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11312412220 its reverse (2221421311), we get a palindrome (13533833531).

Subtracting from 11312412220 its reverse (2221421311), we obtain a palindrome (9090990909).

The spelling of 11312412220 in words is "eleven billion, three hundred twelve million, four hundred twelve thousand, two hundred twenty".