212120522 has 16 divisors (see below), whose sum is σ = 341249760. Its totient is φ = 98581392.

The previous prime is 212120501. The next prime is 212120537. The reversal of 212120522 is 225021212.

212120522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212120522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50648 + ... + 54675.

It is an arithmetic number, because the mean of its divisors is an integer number (21328110).

Almost surely, 2^212120522 is an apocalyptic number.

212120522 is a deficient number, since it is larger than the sum of its proper divisors (129129238).

212120522 is a wasteful number, since it uses less digits than its factorization.

212120522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105397.

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

The square root of 212120522 is about 14564.3579329815. The cubic root of 212120522 is about 596.3861681394.

Adding to 212120522 its reverse (225021212), we get a palindrome (437141734).

The spelling of 212120522 in words is "two hundred twelve million, one hundred twenty thousand, five hundred twenty-two".