212810042868 has 24 divisors (see below), whose sum is σ = 522691333920. Its totient is φ = 67203171360.

The previous prime is 212810042867. The next prime is 212810042873. The reversal of 212810042868 is 868240018212.

It is a super-2 number, since 2×212810042868² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212810042867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466688463 + ... + 466688918.

It is an arithmetic number, because the mean of its divisors is an integer number (21778805580).

Almost surely, 2^212810042868 is an apocalyptic number.

It is an amenable number.

212810042868 is an abundant number, since it is smaller than the sum of its proper divisors (309881291052).

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

212810042868 is a wasteful number, since it uses less digits than its factorization.

212810042868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933377407 (or 933377405 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The spelling of 212810042868 in words is "two hundred twelve billion, eight hundred ten million, forty-two thousand, eight hundred sixty-eight".