13121540200 has 24 divisors (see below), whose sum is σ = 30507581430. Its totient is φ = 5248616000.

The previous prime is 13121540197. The next prime is 13121540213. The reversal of 13121540200 is 204512131.

It can be written as a sum of positive squares in 3 ways, for example, as 5711429476 + 7410110724 = 75574^2 + 86082^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32803651 + ... + 32804050.

Almost surely, 2^13121540200 is an apocalyptic number.

13121540200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121540200 is an abundant number, since it is smaller than the sum of its proper divisors (17386041230).

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

13121540200 is a wasteful number, since it uses less digits than its factorization.

13121540200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65607717 (or 65607708 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 13121540200 in words is "thirteen billion, one hundred twenty-one million, five hundred forty thousand, two hundred".