11112021320 has 32 divisors (see below), whose sum is σ = 25131609720. Its totient is φ = 4421775360.

The previous prime is 11112021299. The next prime is 11112021329. The reversal of 11112021320 is 2312021111.

It can be written as a sum of positive squares in 4 ways, for example, as 8853680836 + 2258340484 = 94094^2 + 47522^2 .

It is a super-2 number, since 2×11112021320² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11112021295 and 11112021304.

It is not an unprimeable number, because it can be changed into a prime (11112021329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711971 + ... + 727410.

Almost surely, 2^11112021320 is an apocalyptic number.

11112021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112021320 is an abundant number, since it is smaller than the sum of its proper divisors (14019588400).

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

11112021320 is a wasteful number, since it uses less digits than its factorization.

11112021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439585 (or 1439581 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11112021320 its reverse (2312021111), we get a palindrome (13424042431).

The spelling of 11112021320 in words is "eleven billion, one hundred twelve million, twenty-one thousand, three hundred twenty".