922221655 has 8 divisors (see below), whose sum is σ = 1108124784. Its totient is φ = 736804800.

The previous prime is 922221647. The next prime is 922221659. The reversal of 922221655 is 556122229.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 922221655 - 2³ = 922221647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 922221655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922221659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117381 + ... + 124990.

It is an arithmetic number, because the mean of its divisors is an integer number (138515598).

Almost surely, 2^922221655 is an apocalyptic number.

922221655 is a deficient number, since it is larger than the sum of its proper divisors (185903129).

922221655 is a wasteful number, since it uses less digits than its factorization.

922221655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243137.

The product of its digits is 21600, while the sum is 34.

The square root of 922221655 is about 30368.1025913704. The cubic root of 922221655 is about 973.3710797923.

The spelling of 922221655 in words is "nine hundred twenty-two million, two hundred twenty-one thousand, six hundred fifty-five".