212213203124 has 24 divisors (see below), whose sum is σ = 403479573000. Its totient is φ = 97077786624.

The previous prime is 212213203117. The next prime is 212213203177. The reversal of 212213203124 is 421302312212.

It can be written as a sum of positive squares in 4 ways, for example, as 990235024 + 211222968100 = 31468^2 + 459590^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212213203124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18051749 + ... + 18063500.

It is an arithmetic number, because the mean of its divisors is an integer number (16811648875).

Almost surely, 2^212213203124 is an apocalyptic number.

It is an amenable number.

212213203124 is a deficient number, since it is larger than the sum of its proper divisors (191266369876).

212213203124 is a wasteful number, since it uses less digits than its factorization.

212213203124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36115379 (or 36115377 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 212213203124 its reverse (421302312212), we get a palindrome (633515515336).

The spelling of 212213203124 in words is "two hundred twelve billion, two hundred thirteen million, two hundred three thousand, one hundred twenty-four".