12122210988 has 72 divisors (see below), whose sum is σ = 31491729360. Its totient is φ = 3928867200.

The previous prime is 12122210981. The next prime is 12122211037. The reversal of 12122210988 is 88901222121.

It is a super-2 number, since 2×12122210988² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12122210981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3273538 + ... + 3277238.

It is an arithmetic number, because the mean of its divisors is an integer number (437385130).

Almost surely, 2^12122210988 is an apocalyptic number.

12122210988 is a gapful number since it is divisible by the number (18) 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 12122210988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15745864680).

12122210988 is an abundant number, since it is smaller than the sum of its proper divisors (19369518372).

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

12122210988 is a wasteful number, since it uses less digits than its factorization.

12122210988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207 (or 6202 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 12122210988 in words is "twelve billion, one hundred twenty-two million, two hundred ten thousand, nine hundred eighty-eight".