622255221 has 24 divisors (see below), whose sum is σ = 1027877760. Its totient is φ = 355345056.

The previous prime is 622255217. The next prime is 622255229. The reversal of 622255221 is 122552226.

It is not a de Polignac number, because 622255221 - 2² = 622255217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622255229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165915 + ... + 169623.

It is an arithmetic number, because the mean of its divisors is an integer number (42828240).

Almost surely, 2^622255221 is an apocalyptic number.

It is an amenable number.

622255221 is a deficient number, since it is larger than the sum of its proper divisors (405622539).

622255221 is a wasteful number, since it uses less digits than its factorization.

622255221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385 (or 6382 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 622255221 is about 24945.0440167982. The cubic root of 622255221 is about 853.7345350394.

The spelling of 622255221 in words is "six hundred twenty-two million, two hundred fifty-five thousand, two hundred twenty-one".