20112220331112 has 256 divisors, whose sum is σ = 63153457920000. Its totient is φ = 5195814294528.

The previous prime is 20112220331101. The next prime is 20112220331113. The reversal of 20112220331112 is 21113302221102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20112220331113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71510139 + ... + 71790837.

It is an arithmetic number, because the mean of its divisors is an integer number (246693195000).

Almost surely, 2^{20112220331112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112220331112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31576728960000).

20112220331112 is an abundant number, since it is smaller than the sum of its proper divisors (43041237588888).

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

20112220331112 is a wasteful number, since it uses less digits than its factorization.

20112220331112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281400 (or 281396 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20112220331112 its reverse (21113302221102), we get a palindrome (41225522552214).

The spelling of 20112220331112 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, three hundred thirty-one thousand, one hundred twelve".