122220212221110 has 128 divisors (see below), whose sum is σ = 310530710983680. Its totient is φ = 30733344585216.

The previous prime is 122220212221061. The next prime is 122220212221111. The reversal of 122220212221110 is 11122212022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220212221111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 392162904 + ... + 392474436.

It is an arithmetic number, because the mean of its divisors is an integer number (2426021179560).

Almost surely, 2^{122220212221110} is an apocalyptic number.

122220212221110 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 122220212221110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155265355491840).

122220212221110 is an abundant number, since it is smaller than the sum of its proper divisors (188310498762570).

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

122220212221110 is a wasteful number, since it uses less digits than its factorization.

122220212221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322102.

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

Adding to 122220212221110 its reverse (11122212022221), we get a palindrome (133342424243331).

The spelling of 122220212221110 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty-one thousand, one hundred ten".