212705714028 has 24 divisors (see below), whose sum is σ = 497204395632. Its totient is φ = 70774609984.

The previous prime is 212705713981. The next prime is 212705714087. The reversal of 212705714028 is 820417507212.

It is a super-2 number, since 2×212705714028² (a number of 23 digits) contains 22 as substring.

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, 15904875 + ... + 15918242.

It is an arithmetic number, because the mean of its divisors is an integer number (20716849818).

Almost surely, 2^212705714028 is an apocalyptic number.

It is an amenable number.

212705714028 is an abundant number, since it is smaller than the sum of its proper divisors (284498681604).

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

212705714028 is a wasteful number, since it uses less digits than its factorization.

212705714028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31823681 (or 31823679 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 212705714028 in words is "two hundred twelve billion, seven hundred five million, seven hundred fourteen thousand, twenty-eight".