221111111112202 has 16 divisors (see below), whose sum is σ = 337941029426400. Its totient is φ = 108464305021072.

The previous prime is 221111111112193. The next prime is 221111111112211. The reversal of 221111111112202 is 202211111111122.

It is an interprime number because it is at equal distance from previous prime (221111111112193) and next prime (221111111112211).

It is a self number, because there is not a number n which added to its sum of digits gives 221111111112202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48747952 + ... + 53090347.

It is an arithmetic number, because the mean of its divisors is an integer number (21121314339150).

Almost surely, 2^{221111111112202} is an apocalyptic number.

221111111112202 is a deficient number, since it is larger than the sum of its proper divisors (116829918314198).

221111111112202 is a wasteful number, since it uses less digits than its factorization.

221111111112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101858837.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 221111111112202 its reverse (202211111111122), we get a palindrome (423322222223324).

The spelling of 221111111112202 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred eleven million, one hundred twelve thousand, two hundred two".