20122213113112 has 64 divisors (see below), whose sum is σ = 42077830026240. Its totient is φ = 8942690572800.

The previous prime is 20122213113073. The next prime is 20122213113127. The reversal of 20122213113112 is 21131131222102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 1551037 + ... + 6530707.

It is an arithmetic number, because the mean of its divisors is an integer number (657466094160).

Almost surely, 2^{20122213113112} is an apocalyptic number.

20122213113112 is a gapful number since it is divisible by the number (22) 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 20122213113112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21038915013120).

20122213113112 is an abundant number, since it is smaller than the sum of its proper divisors (21955616913128).

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

20122213113112 is a wasteful number, since it uses less digits than its factorization.

20122213113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980712 (or 4980708 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20122213113112 its reverse (21131131222102), we get a palindrome (41253344335214).

The spelling of 20122213113112 in words is "twenty trillion, one hundred twenty-two billion, two hundred thirteen million, one hundred thirteen thousand, one hundred twelve".