222221995 has 4 divisors (see below), whose sum is σ = 266666400. Its totient is φ = 177777592.

The previous prime is 222221971. The next prime is 222222029. The reversal of 222221995 is 599122222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599122222 = 2 ⋅299561111.

It is a cyclic number.

It is not a de Polignac number, because 222221995 - 2¹¹ = 222219947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222221995.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22222195 + ... + 22222204.

It is an arithmetic number, because the mean of its divisors is an integer number (66666600).

Almost surely, 2^222221995 is an apocalyptic number.

222221995 is a deficient number, since it is larger than the sum of its proper divisors (44444405).

222221995 is an equidigital number, since it uses as much as digits as its factorization.

222221995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44444404.

The product of its digits is 12960, while the sum is 34.

The square root of 222221995 is about 14907.1122287316. The cubic root of 222221995 is about 605.7066578322.

The spelling of 222221995 in words is "two hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-five".