11215381120 has 64 divisors (see below), whose sum is σ = 27736360200. Its totient is φ = 4331450368.

The previous prime is 11215381069. The next prime is 11215381153. The reversal of 11215381120 is 2118351211.

It can be written as a sum of positive squares in 4 ways, for example, as 6754209856 + 4461171264 = 82184^2 + 66792^2 .

It is a tau number, because it is divible by the number of its divisors (64).

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, 283579 + ... + 320698.

Almost surely, 2^11215381120 is an apocalyptic number.

11215381120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11215381120 is an abundant number, since it is smaller than the sum of its proper divisors (16520979080).

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

11215381120 is an equidigital number, since it uses as much as digits as its factorization.

11215381120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604325 (or 604313 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 25.

The spelling of 11215381120 in words is "eleven billion, two hundred fifteen million, three hundred eighty-one thousand, one hundred twenty".