12131211300 has 72 divisors (see below), whose sum is σ = 37799622336. Its totient is φ = 2986143360.

The previous prime is 12131211263. The next prime is 12131211319. The reversal of 12131211300 is 311213121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12131211300.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1551384 + ... + 1559183.

Almost surely, 2^12131211300 is an apocalyptic number.

12131211300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131211300 is an abundant number, since it is smaller than the sum of its proper divisors (25668411036).

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

12131211300 is a wasteful number, since it uses less digits than its factorization.

12131211300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110597 (or 3110590 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12131211300 its reverse (311213121), we get a palindrome (12442424421).

The spelling of 12131211300 in words is "twelve billion, one hundred thirty-one million, two hundred eleven thousand, three hundred".