11215017372 has 48 divisors (see below), whose sum is σ = 28187973632. Its totient is φ = 3449960640.

The previous prime is 11215017367. The next prime is 11215017403. The reversal of 11215017372 is 27371051211.

It is a super-2 number, since 2×11215017372² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310973 + ... + 1319499.

Almost surely, 2^11215017372 is an apocalyptic number.

11215017372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11215017372 is an abundant number, since it is smaller than the sum of its proper divisors (16972956260).

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

11215017372 is a wasteful number, since it uses less digits than its factorization.

11215017372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16978 (or 16976 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

Adding to 11215017372 its reverse (27371051211), we get a palindrome (38586068583).

The spelling of 11215017372 in words is "eleven billion, two hundred fifteen million, seventeen thousand, three hundred seventy-two".