122221110 has 128 divisors (see below), whose sum is σ = 341936640. Its totient is φ = 27648000.

The previous prime is 122221087. The next prime is 122221147. The reversal of 122221110 is 11122221.

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, 633174 + ... + 633366.

It is an arithmetic number, because the mean of its divisors is an integer number (2671380).

Almost surely, 2^122221110 is an apocalyptic number.

122221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122221110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170968320).

122221110 is an abundant number, since it is smaller than the sum of its proper divisors (219715530).

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

122221110 is a wasteful number, since it uses less digits than its factorization.

122221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 122221110 is about 11055.3656655942. The cubic root of 122221110 is about 496.2670122989.

Adding to 122221110 its reverse (11122221), we get a palindrome (133343331).

It can be divided in two parts, 1222211 and 10, that added together give a palindrome (1222221).

The spelling of 122221110 in words is "one hundred twenty-two million, two hundred twenty-one thousand, one hundred ten".