212520104 has 16 divisors (see below), whose sum is σ = 407742720. Its totient is φ = 103788720.

The previous prime is 212520103. The next prime is 212520109. The reversal of 212520104 is 401025212.

It is not an unprimeable number, because it can be changed into a prime (212520101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308552 + ... + 309239.

It is an arithmetic number, because the mean of its divisors is an integer number (25483920).

Almost surely, 2^212520104 is an apocalyptic number.

It is an amenable number.

212520104 is a deficient number, since it is larger than the sum of its proper divisors (195222616).

212520104 is a wasteful number, since it uses less digits than its factorization.

212520104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617840 (or 617836 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 212520104 is about 14578.0692823158. The cubic root of 212520104 is about 596.7604140260.

Adding to 212520104 its reverse (401025212), we get a palindrome (613545316).

The spelling of 212520104 in words is "two hundred twelve million, five hundred twenty thousand, one hundred four".