212112502 has 32 divisors (see below), whose sum is σ = 385938432. Its totient is φ = 85352064.

The previous prime is 212112497. The next prime is 212112503. The reversal of 212112502 is 205211212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112503) 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 15 ways as a sum of consecutive naturals, for example, 133203 + ... + 134785.

It is an arithmetic number, because the mean of its divisors is an integer number (12060576).

Almost surely, 2^212112502 is an apocalyptic number.

212112502 is a deficient number, since it is larger than the sum of its proper divisors (173825930).

212112502 is a wasteful number, since it uses less digits than its factorization.

212112502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 212112502 is about 14564.0826006996. The cubic root of 212112502 is about 596.3786518505.

Adding to 212112502 its reverse (205211212), we get a palindrome (417323714).

The spelling of 212112502 in words is "two hundred twelve million, one hundred twelve thousand, five hundred two".