222190887 has 4 divisors (see below), whose sum is σ = 296254520. Its totient is φ = 148127256.

The previous prime is 222190877. The next prime is 222190889. The reversal of 222190887 is 788091222.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222190887 - 2⁶ = 222190823 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 (222190889) 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 3 ways as a sum of consecutive naturals, for example, 37031812 + ... + 37031817.

It is an arithmetic number, because the mean of its divisors is an integer number (74063630).

Almost surely, 2^222190887 is an apocalyptic number.

222190887 is a deficient number, since it is larger than the sum of its proper divisors (74063633).

222190887 is an equidigital number, since it uses as much as digits as its factorization.

222190887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74063632.

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

The square root of 222190887 is about 14906.0687976408. The cubic root of 222190887 is about 605.6783930003.

The spelling of 222190887 in words is "two hundred twenty-two million, one hundred ninety thousand, eight hundred eighty-seven".