212513244 has 12 divisors (see below), whose sum is σ = 495864264. Its totient is φ = 70837744.

The previous prime is 212513219. The next prime is 212513269. The reversal of 212513244 is 442315212.

It is an interprime number because it is at equal distance from previous prime (212513219) and next prime (212513269).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8854707 + ... + 8854730.

It is an arithmetic number, because the mean of its divisors is an integer number (41322022).

Almost surely, 2^212513244 is an apocalyptic number.

It is an amenable number.

212513244 is an abundant number, since it is smaller than the sum of its proper divisors (283351020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212513244 is a wasteful number, since it uses less digits than its factorization.

212513244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17709444 (or 17709442 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 212513244 is about 14577.8339954878. The cubic root of 212513244 is about 596.7539929543.

Adding to 212513244 its reverse (442315212), we get a palindrome (654828456).

The spelling of 212513244 in words is "two hundred twelve million, five hundred thirteen thousand, two hundred forty-four".