12220202021112 has 128 divisors (see below), whose sum is σ = 34776387072000. Its totient is φ = 3973654644480.

The previous prime is 12220202021101. The next prime is 12220202021117. The reversal of 12220202021112 is 21112020202221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220202021117) 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, 96812713 + ... + 96938855.

It is an arithmetic number, because the mean of its divisors is an integer number (271690524000).

Almost surely, 2^{12220202021112} is an apocalyptic number.

12220202021112 is a gapful number since it is divisible by the number (12) 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 12220202021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17388193536000).

12220202021112 is an abundant number, since it is smaller than the sum of its proper divisors (22556185050888).

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

12220202021112 is a wasteful number, since it uses less digits than its factorization.

12220202021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137138 (or 137128 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220202021112 its reverse (21112020202221), we get a palindrome (33332222223333).

The spelling of 12220202021112 in words is "twelve trillion, two hundred twenty billion, two hundred two million, twenty-one thousand, one hundred twelve".