212102021204 has 12 divisors (see below), whose sum is σ = 383152038528. Its totient is φ = 102630010200.

The previous prime is 212102021137. The next prime is 212102021213. The reversal of 212102021204 is 402120201212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855249962 + ... + 855250209.

It is an arithmetic number, because the mean of its divisors is an integer number (31929336544).

Almost surely, 2^212102021204 is an apocalyptic number.

It is an amenable number.

212102021204 is a deficient number, since it is larger than the sum of its proper divisors (171050017324).

212102021204 is a wasteful number, since it uses less digits than its factorization.

212102021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710500206 (or 1710500204 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212102021204 its reverse (402120201212), we get a palindrome (614222222416).

The spelling of 212102021204 in words is "two hundred twelve billion, one hundred two million, twenty-one thousand, two hundred four".