222111122210 has 64 divisors (see below), whose sum is σ = 437277947904. Its totient is φ = 80864486400.

The previous prime is 222111122161. The next prime is 222111122221. The reversal of 222111122210 is 12221111222.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7949024 + ... + 7976916.

It is an arithmetic number, because the mean of its divisors is an integer number (6832467936).

Almost surely, 2^222111122210 is an apocalyptic number.

222111122210 is a deficient number, since it is larger than the sum of its proper divisors (215166825694).

222111122210 is a wasteful number, since it uses less digits than its factorization.

222111122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29459.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222111122210 its reverse (12221111222), we get a palindrome (234332233432).

The spelling of 222111122210 in words is "two hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred ten".