213131121200 has 60 divisors (see below), whose sum is σ = 519061939368. Its totient is φ = 84084595200.

The previous prime is 213131121199. The next prime is 213131121239. The reversal of 213131121200 is 2121131312.

213131121200 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 3620306 + ... + 3678705.

Almost surely, 2^213131121200 is an apocalyptic number.

213131121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213131121200 is an abundant number, since it is smaller than the sum of its proper divisors (305930818168).

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

213131121200 is a wasteful number, since it uses less digits than its factorization.

213131121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7299102 (or 7299091 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213131121200 its reverse (2121131312), we get a palindrome (215252252512).

The spelling of 213131121200 in words is "two hundred thirteen billion, one hundred thirty-one million, one hundred twenty-one thousand, two hundred".