222111121122210 has 32 divisors (see below), whose sum is σ = 550262390395392. Its totient is φ = 57318998999040.

The previous prime is 222111121122181. The next prime is 222111121122259. The reversal of 222111121122210 is 12221121111222.

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, 119414580319 + ... + 119414582178.

It is an arithmetic number, because the mean of its divisors is an integer number (17195699699856).

Almost surely, 2^{222111121122210} is an apocalyptic number.

222111121122210 is an abundant number, since it is smaller than the sum of its proper divisors (328151269273182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222111121122210 is a wasteful number, since it uses less digits than its factorization.

222111121122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238829162538.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222111121122210 its reverse (12221121111222), we get a palindrome (234332242233432).

The spelling of 222111121122210 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".