221122102120110 has 160 divisors (see below), whose sum is σ = 596753584225920. Its totient is φ = 58749670049472.

The previous prime is 221122102120021. The next prime is 221122102120151. The reversal of 221122102120110 is 11021201221122.

221122102120110 is a `hidden beast` number, since 2 + 211 + 221 + 0 + 2 + 120 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1825297921 + ... + 1825419059.

It is an arithmetic number, because the mean of its divisors is an integer number (3729709901412).

Almost surely, 2^{221122102120110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221122102120110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298376792112960).

221122102120110 is an abundant number, since it is smaller than the sum of its proper divisors (375631482105810).

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

221122102120110 is a wasteful number, since it uses less digits than its factorization.

221122102120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129404 (or 129395 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221122102120110 its reverse (11021201221122), we get a palindrome (232143303341232).

The spelling of 221122102120110 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred two million, one hundred twenty thousand, one hundred ten".