212994891870 has 32 divisors (see below), whose sum is σ = 522064078848. Its totient is φ = 55590155808.

The previous prime is 212994891841. The next prime is 212994891881. The reversal of 212994891870 is 78198499212.

It is a happy number.

212994891870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 75528694 + ... + 75531513.

It is an arithmetic number, because the mean of its divisors is an integer number (16314502464).

Almost surely, 2^212994891870 is an apocalyptic number.

212994891870 is an abundant number, since it is smaller than the sum of its proper divisors (309069186978).

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

212994891870 is a wasteful number, since it uses less digits than its factorization.

212994891870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151060264.

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 212994891870 in words is "two hundred twelve billion, nine hundred ninety-four million, eight hundred ninety-one thousand, eight hundred seventy".