212122254 has 16 divisors (see below), whose sum is σ = 431200080. Its totient is φ = 69548160.

The previous prime is 212122249. The next prime is 212122297. The reversal of 212122254 is 452221212.

212122254 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 212122254.

It is a congruent number.

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, 289419 + ... + 290150.

It is an arithmetic number, because the mean of its divisors is an integer number (26950005).

Almost surely, 2^212122254 is an apocalyptic number.

212122254 is an abundant number, since it is smaller than the sum of its proper divisors (219077826).

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

212122254 is a wasteful number, since it uses less digits than its factorization.

212122254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579635.

The product of its digits is 640, while the sum is 21.

The square root of 212122254 is about 14564.4173930851. The cubic root of 212122254 is about 596.3877913330.

Adding to 212122254 its reverse (452221212), we get a palindrome (664343466).

The spelling of 212122254 in words is "two hundred twelve million, one hundred twenty-two thousand, two hundred fifty-four".