222880221 has 16 divisors (see below), whose sum is σ = 330481920. Its totient is φ = 148456800.

The previous prime is 222880213. The next prime is 222880237. The reversal of 222880221 is 122088222.

It is not a de Polignac number, because 222880221 - 2³ = 222880213 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222880261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35521 + ... + 41321.

It is an arithmetic number, because the mean of its divisors is an integer number (20655120).

Almost surely, 2^222880221 is an apocalyptic number.

It is an amenable number.

222880221 is a deficient number, since it is larger than the sum of its proper divisors (107601699).

222880221 is a wasteful number, since it uses less digits than its factorization.

222880221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233 (or 7227 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 222880221 is about 14929.1734868344. The cubic root of 222880221 is about 606.3041067520.

The spelling of 222880221 in words is "two hundred twenty-two million, eight hundred eighty thousand, two hundred twenty-one".