212013444 has 24 divisors (see below), whose sum is σ = 496201888. Its totient is φ = 70456320.

The previous prime is 212013421. The next prime is 212013469. The reversal of 212013444 is 444310212.

It is a super-2 number, since 2×212013444² = 89899400873482272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212013444.

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, 22717 + ... + 30660.

Almost surely, 2^212013444 is an apocalyptic number.

It is an amenable number.

212013444 is an abundant number, since it is smaller than the sum of its proper divisors (284188444).

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

212013444 is a wasteful number, since it uses less digits than its factorization.

212013444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53715 (or 53713 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 212013444 is about 14560.6814400975. The cubic root of 212013444 is about 596.2857997483.

Adding to 212013444 its reverse (444310212), we get a palindrome (656323656).

The spelling of 212013444 in words is "two hundred twelve million, thirteen thousand, four hundred forty-four".