222121220122110 has 128 divisors (see below), whose sum is σ = 566252022495744. Its totient is φ = 55570267074560.

The previous prime is 222121220122099. The next prime is 222121220122141. The reversal of 222121220122110 is 11221022121222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226486705 + ... + 227465315.

It is an arithmetic number, because the mean of its divisors is an integer number (4423843925748).

Almost surely, 2^{222121220122110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222121220122110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283126011247872).

222121220122110 is an abundant number, since it is smaller than the sum of its proper divisors (344130802373634).

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

222121220122110 is a wasteful number, since it uses less digits than its factorization.

222121220122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980058.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222121220122110 its reverse (11221022121222), we get a palindrome (233342242243332).

The spelling of 222121220122110 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred ten".