11312110331220 has 96 divisors (see below), whose sum is σ = 32224549593600. Its totient is φ = 2964164581504.

The previous prime is 11312110331219. The next prime is 11312110331231. The reversal of 11312110331220 is 2213301121311.

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, 7596967 + ... + 8963153.

It is an arithmetic number, because the mean of its divisors is an integer number (335672391600).

Almost surely, 2^{11312110331220} is an apocalyptic number.

11312110331220 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 11312110331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16112274796800).

11312110331220 is an abundant number, since it is smaller than the sum of its proper divisors (20912439262380).

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

11312110331220 is a wasteful number, since it uses less digits than its factorization.

11312110331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368597 (or 1368595 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11312110331220 its reverse (2213301121311), we get a palindrome (13525411452531).

The spelling of 11312110331220 in words is "eleven trillion, three hundred twelve billion, one hundred ten million, three hundred thirty-one thousand, two hundred twenty".