15211440012 has 48 divisors (see below), whose sum is σ = 36463644000. Its totient is φ = 4932579840.

The previous prime is 15211440001. The next prime is 15211440029. The reversal of 15211440012 is 21004411251.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127414 + ... + 216002.

It is an arithmetic number, because the mean of its divisors is an integer number (759659250).

Almost surely, 2^15211440012 is an apocalyptic number.

15211440012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15211440012 is an abundant number, since it is smaller than the sum of its proper divisors (21252203988).

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

15211440012 is a wasteful number, since it uses less digits than its factorization.

15211440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88986 (or 88984 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 15211440012 its reverse (21004411251), we get a palindrome (36215851263).

The spelling of 15211440012 in words is "fifteen billion, two hundred eleven million, four hundred forty thousand, twelve".