212413521604 has 24 divisors (see below), whose sum is σ = 383823001856. Its totient is φ = 102751740000.

The previous prime is 212413521601. The next prime is 212413521613. The reversal of 212413521604 is 406125314212.

212413521604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (212413521601) by changing a digit.

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, 202954 + ... + 682654.

Almost surely, 2^212413521604 is an apocalyptic number.

It is an amenable number.

212413521604 is a deficient number, since it is larger than the sum of its proper divisors (171409480252).

212413521604 is a wasteful number, since it uses less digits than its factorization.

212413521604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483307 (or 483305 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 212413521604 its reverse (406125314212), we get a palindrome (618538835816).

The spelling of 212413521604 in words is "two hundred twelve billion, four hundred thirteen million, five hundred twenty-one thousand, six hundred four".