15001213000 has 32 divisors (see below), whose sum is σ = 35102840760. Its totient is φ = 6000484800.

The previous prime is 15001212997. The next prime is 15001213001. The reversal of 15001213000 is 31210051.

It can be written as a sum of positive squares in 4 ways, for example, as 9335037924 + 5666175076 = 96618^2 + 75274^2 .

It is not an unprimeable number, because it can be changed into a prime (15001213001) 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, 7499607 + ... + 7501606.

Almost surely, 2^15001213000 is an apocalyptic number.

15001213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15001213000 is an abundant number, since it is smaller than the sum of its proper divisors (20101627760).

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

15001213000 is a wasteful number, since it uses less digits than its factorization.

15001213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001234 (or 15001220 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

Adding to 15001213000 its reverse (31210051), we get a palindrome (15032423051).

The spelling of 15001213000 in words is "fifteen billion, one million, two hundred thirteen thousand".