11222121320 has 32 divisors (see below), whose sum is σ = 25448601600. Its totient is φ = 4453501248.

The previous prime is 11222121319. The next prime is 11222121343. The reversal of 11222121320 is 2312122211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099460 + ... + 1109619.

It is an arithmetic number, because the mean of its divisors is an integer number (795268800).

Almost surely, 2^11222121320 is an apocalyptic number.

11222121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222121320 is an abundant number, since it is smaller than the sum of its proper divisors (14226480280).

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

11222121320 is a wasteful number, since it uses less digits than its factorization.

11222121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209217 (or 2209213 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11222121320 its reverse (2312122211), we get a palindrome (13534243531).

The spelling of 11222121320 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty".