13212131300 has 36 divisors (see below), whose sum is σ = 29063085156. Its totient is φ = 5212454400.

The previous prime is 13212131299. The next prime is 13212131321. The reversal of 13212131300 is 313121231.

It can be written as a sum of positive squares in 6 ways, for example, as 68425984 + 13143705316 = 8272^2 + 114646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 897641 + ... + 912240.

It is an arithmetic number, because the mean of its divisors is an integer number (807307921).

Almost surely, 2^13212131300 is an apocalyptic number.

13212131300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212131300 is an abundant number, since it is smaller than the sum of its proper divisors (15850953856).

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

13212131300 is a wasteful number, since it uses less digits than its factorization.

13212131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809968 (or 1809961 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13212131300 its reverse (313121231), we get a palindrome (13525252531).

The spelling of 13212131300 in words is "thirteen billion, two hundred twelve million, one hundred thirty-one thousand, three hundred".