122440511220 has 96 divisors (see below), whose sum is σ = 350615236608. Its totient is φ = 31911614592.

The previous prime is 122440511203. The next prime is 122440511251. The reversal of 122440511220 is 22115044221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2020279 + ... + 2080001.

It is an arithmetic number, because the mean of its divisors is an integer number (3652242048).

Almost surely, 2^122440511220 is an apocalyptic number.

122440511220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122440511220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175307618304).

122440511220 is an abundant number, since it is smaller than the sum of its proper divisors (228174725388).

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

122440511220 is a wasteful number, since it uses less digits than its factorization.

122440511220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60509 (or 60507 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 122440511220 its reverse (22115044221), we get a palindrome (144555555441).

The spelling of 122440511220 in words is "one hundred twenty-two billion, four hundred forty million, five hundred eleven thousand, two hundred twenty".