222774617646621 has 48 divisors (see below), whose sum is σ = 328984702545408. Its totient is φ = 145200538828800.

The previous prime is 222774617646601. The next prime is 222774617646649. The reversal of 222774617646621 is 126646716477222.

222774617646621 is a `hidden beast` number, since 2 + 2 + 2 + 7 + 7 + 4 + 617 + 6 + 4 + 6 + 6 + 2 + 1 = 666.

222774617646621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222774617646621 - 2⁵ = 222774617646589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222774617646601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6906224925 + ... + 6906257181.

It is an arithmetic number, because the mean of its divisors is an integer number (6853847969696).

Almost surely, 2^{222774617646621} is an apocalyptic number.

It is an amenable number.

222774617646621 is a deficient number, since it is larger than the sum of its proper divisors (106210084898787).

222774617646621 is a wasteful number, since it uses less digits than its factorization.

222774617646621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49322 (or 49319 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 222774617646621 in words is "two hundred twenty-two trillion, seven hundred seventy-four billion, six hundred seventeen million, six hundred forty-six thousand, six hundred twenty-one".