222820899 has 16 divisors (see below), whose sum is σ = 340745472. Its totient is φ = 126872928.

The previous prime is 222820867. The next prime is 222820943. The reversal of 222820899 is 998028222.

It is not a de Polignac number, because 222820899 - 2⁵ = 222820867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222820899.

It is not an unprimeable number, because it can be changed into a prime (222820099) 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, 12804 + ... + 24689.

It is an arithmetic number, because the mean of its divisors is an integer number (21296592).

Almost surely, 2^222820899 is an apocalyptic number.

222820899 is a deficient number, since it is larger than the sum of its proper divisors (117924573).

222820899 is a wasteful number, since it uses less digits than its factorization.

222820899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37786.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 222820899 is about 14927.1865734974. The cubic root of 222820899 is about 606.2503104969.

It can be divided in two parts, 222 and 820899, that added together give a triangular number (821121 = T₁₂₈₁).

The spelling of 222820899 in words is "two hundred twenty-two million, eight hundred twenty thousand, eight hundred ninety-nine".