222221100122 has 32 divisors (see below), whose sum is σ = 387387187200. Its totient is φ = 93638523888.

The previous prime is 222221100097. The next prime is 222221100131. The reversal of 222221100122 is 221001122222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222221100122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156008 + ... + 684675.

It is an arithmetic number, because the mean of its divisors is an integer number (12105849600).

Almost surely, 2^222221100122 is an apocalyptic number.

222221100122 is a deficient number, since it is larger than the sum of its proper divisors (165166087078).

222221100122 is a wasteful number, since it uses less digits than its factorization.

222221100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841010.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222221100122 its reverse (221001122222), we get a palindrome (443222222344).

The spelling of 222221100122 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-two".