11021113312 has 24 divisors (see below), whose sum is σ = 23670346392. Its totient is φ = 5009596800.

The previous prime is 11021113309. The next prime is 11021113319. The reversal of 11021113312 is 21331112011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021113319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15654639 + ... + 15655342.

It is an arithmetic number, because the mean of its divisors is an integer number (986264433).

Almost surely, 2^11021113312 is an apocalyptic number.

It is an amenable number.

11021113312 is an abundant number, since it is smaller than the sum of its proper divisors (12649233080).

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

11021113312 is a wasteful number, since it uses less digits than its factorization.

11021113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310002 (or 31309994 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11021113312 its reverse (21331112011), we get a palindrome (32352225323).

The spelling of 11021113312 in words is "eleven billion, twenty-one million, one hundred thirteen thousand, three hundred twelve".