212211242804 has 36 divisors (see below), whose sum is σ = 408255010884. Its totient is φ = 96446592000.

The previous prime is 212211242773. The next prime is 212211242809. The reversal of 212211242804 is 408242112212.

It can be written as a sum of positive squares in 2 ways, for example, as 18785443600 + 193425799204 = 137060^2 + 439802^2 .

It is a super-2 number, since 2×212211242804² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211242809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4156874 + ... + 4207614.

It is an arithmetic number, because the mean of its divisors is an integer number (11340416969).

Almost surely, 2^212211242804 is an apocalyptic number.

It is an amenable number.

212211242804 is a deficient number, since it is larger than the sum of its proper divisors (196043768080).

212211242804 is a wasteful number, since it uses less digits than its factorization.

212211242804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59408 (or 59395 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The spelling of 212211242804 in words is "two hundred twelve billion, two hundred eleven million, two hundred forty-two thousand, eight hundred four".