212131100204 has 48 divisors (see below), whose sum is σ = 398093875200. Its totient is φ = 98551362816.

The previous prime is 212131100201. The next prime is 212131100213. The reversal of 212131100204 is 402001131212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (212131100201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8108657 + ... + 8134775.

It is an arithmetic number, because the mean of its divisors is an integer number (8293622400).

Almost surely, 2^212131100204 is an apocalyptic number.

It is an amenable number.

212131100204 is a deficient number, since it is larger than the sum of its proper divisors (185962774996).

212131100204 is a wasteful number, since it uses less digits than its factorization.

212131100204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27662 (or 27660 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212131100204 its reverse (402001131212), we get a palindrome (614132231416).

The spelling of 212131100204 in words is "two hundred twelve billion, one hundred thirty-one million, one hundred thousand, two hundred four".