222198087 has 12 divisors (see below), whose sum is σ = 306835880. Its totient is φ = 143022432.

The previous prime is 222198083. The next prime is 222198107. The reversal of 222198087 is 780891222.

It is not a de Polignac number, because 222198087 - 2² = 222198083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222198083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41512 + ... + 46557.

Almost surely, 2^222198087 is an apocalyptic number.

222198087 is a deficient number, since it is larger than the sum of its proper divisors (84637793).

222198087 is an equidigital number, since it uses as much as digits as its factorization.

222198087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88130 (or 88101 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 222198087 is about 14906.3103080541. The cubic root of 222198087 is about 605.6849351788.

The spelling of 222198087 in words is "two hundred twenty-two million, one hundred ninety-eight thousand, eighty-seven".