656213216022 has 192 divisors, whose sum is σ = 1812418882560. Its totient is φ = 172320535296.

The previous prime is 656213216011. The next prime is 656213216023. The reversal of 656213216022 is 220612312656.

656213216022 is a `hidden beast` number, since 6 + 5 + 6 + 21 + 3 + 21 + 602 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656213216023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14862463 + ... + 14906549.

It is an arithmetic number, because the mean of its divisors is an integer number (9439681680).

Almost surely, 2^656213216022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656213216022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906209441280).

656213216022 is an abundant number, since it is smaller than the sum of its proper divisors (1156205666538).

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

656213216022 is a wasteful number, since it uses less digits than its factorization.

656213216022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44364 (or 44345 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 656213216022 its reverse (220612312656), we get a palindrome (876825528678).

The spelling of 656213216022 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred sixteen thousand, twenty-two".