212400012404 has 24 divisors (see below), whose sum is σ = 387952044480. Its totient is φ = 101558741504.

The previous prime is 212400012373. The next prime is 212400012481. The reversal of 212400012404 is 404210004212.

212400012404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212400012404² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125447 + ... + 663729.

It is an arithmetic number, because the mean of its divisors is an integer number (16164668520).

Almost surely, 2^212400012404 is an apocalyptic number.

It is an amenable number.

212400012404 is a deficient number, since it is larger than the sum of its proper divisors (175552032076).

212400012404 is a wasteful number, since it uses less digits than its factorization.

212400012404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542599 (or 542597 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212400012404 its reverse (404210004212), we get a palindrome (616610016616).

The spelling of 212400012404 in words is "two hundred twelve billion, four hundred million, twelve thousand, four hundred four".