222821254656 has 1440 divisors, whose sum is σ = 900627856128. Its totient is φ = 52115374080.

The previous prime is 222821254613. The next prime is 222821254681. The reversal of 222821254656 is 656452128222.

222821254656 is a `hidden beast` number, since 2 + 22 + 82 + 1 + 2 + 546 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2163313101 + ... + 2163313203.

Almost surely, 2^222821254656 is an apocalyptic number.

222821254656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222821254656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450313928064).

222821254656 is an abundant number, since it is smaller than the sum of its proper divisors (677806601472).

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

222821254656 is a wasteful number, since it uses less digits than its factorization.

222821254656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 206 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 222821254656 in words is "two hundred twenty-two billion, eight hundred twenty-one million, two hundred fifty-four thousand, six hundred fifty-six".