12212211120 has 160 divisors (see below), whose sum is σ = 41168668608. Its totient is φ = 2982150144.

The previous prime is 12212211101. The next prime is 12212211127. The reversal of 12212211120 is 2111221221.

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 12212211120.

It is not an unprimeable number, because it can be changed into a prime (12212211127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110512 + ... + 191408.

Almost surely, 2^12212211120 is an apocalyptic number.

12212211120 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 12212211120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20584334304).

12212211120 is an abundant number, since it is smaller than the sum of its proper divisors (28956457488).

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

12212211120 is a wasteful number, since it uses less digits than its factorization.

12212211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80967 (or 80961 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12212211120 its reverse (2111221221), we get a palindrome (14323432341).

The spelling of 12212211120 in words is "twelve billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty".