212022640408 has 16 divisors (see below), whose sum is σ = 420927301080. Its totient is φ = 99775360128.

The previous prime is 212022640339. The next prime is 212022640439. The reversal of 212022640408 is 804046220212.

212022640408 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 212022640408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779494866 + ... + 779495137.

Almost surely, 2^212022640408 is an apocalyptic number.

It is an amenable number.

212022640408 is a deficient number, since it is larger than the sum of its proper divisors (208904660672).

212022640408 is a wasteful number, since it uses less digits than its factorization.

212022640408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558990026 (or 1558990022 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 212022640408 in words is "two hundred twelve billion, twenty-two million, six hundred forty thousand, four hundred eight".