12221031120 has 80 divisors (see below), whose sum is σ = 38007245952. Its totient is φ = 3248442880.

The previous prime is 12221031091. The next prime is 12221031149. The reversal of 12221031120 is 2113012221.

It is an interprime number because it is at equal distance from previous prime (12221031091) and next prime (12221031149).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12221031120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7227 + ... + 156506.

Almost surely, 2^12221031120 is an apocalyptic number.

12221031120 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 12221031120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19003622976).

12221031120 is an abundant number, since it is smaller than the sum of its proper divisors (25786214832).

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

12221031120 is a wasteful number, since it uses less digits than its factorization.

12221031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164060 (or 164054 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12221031120 its reverse (2113012221), we get a palindrome (14334043341).

The spelling of 12221031120 in words is "twelve billion, two hundred twenty-one million, thirty-one thousand, one hundred twenty".