212440126244 has 72 divisors (see below), whose sum is σ = 410025006720. Its totient is φ = 96113622528.

The previous prime is 212440126231. The next prime is 212440126271. The reversal of 212440126244 is 442621044212.

It is a self number, because there is not a number n which added to its sum of digits gives 212440126244.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24672212 + ... + 24680820.

It is an arithmetic number, because the mean of its divisors is an integer number (5694791760).

Almost surely, 2^212440126244 is an apocalyptic number.

It is an amenable number.

212440126244 is a deficient number, since it is larger than the sum of its proper divisors (197584880476).

212440126244 is a wasteful number, since it uses less digits than its factorization.

212440126244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9417 (or 9396 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 212440126244 in words is "two hundred twelve billion, four hundred forty million, one hundred twenty-six thousand, two hundred forty-four".