212021124 has 24 divisors (see below), whose sum is σ = 565389888. Its totient is φ = 60577440.

The previous prime is 212021113. The next prime is 212021141. The reversal of 212021124 is 421120212.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1261947 + ... + 1262114.

It is an arithmetic number, because the mean of its divisors is an integer number (23557912).

Almost surely, 2^212021124 is an apocalyptic number.

It is an amenable number.

212021124 is an abundant number, since it is smaller than the sum of its proper divisors (353368764).

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

212021124 is a wasteful number, since it uses less digits than its factorization.

212021124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524075 (or 2524073 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 212021124 is about 14560.9451616301. The cubic root of 212021124 is about 596.2929996370.

Adding to 212021124 its reverse (421120212), we get a palindrome (633141336).

The spelling of 212021124 in words is "two hundred twelve million, twenty-one thousand, one hundred twenty-four".