15121002200 has 48 divisors (see below), whose sum is σ = 35681083080. Its totient is φ = 5958120960.

The previous prime is 15121002181. The next prime is 15121002203. The reversal of 15121002200 is 220012151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15121002203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 550817 + ... + 577616.

Almost surely, 2^15121002200 is an apocalyptic number.

15121002200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15121002200 is an abundant number, since it is smaller than the sum of its proper divisors (20560080880).

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

15121002200 is a wasteful number, since it uses less digits than its factorization.

15121002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128516 (or 1128507 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 15121002200 its reverse (220012151), we get a palindrome (15341014351).

The spelling of 15121002200 in words is "fifteen billion, one hundred twenty-one million, two thousand, two hundred".