20442012111312 has 160 divisors (see below), whose sum is σ = 57666281550336. Its totient is φ = 6188426534400.

The previous prime is 20442012111293. The next prime is 20442012111331. The reversal of 20442012111312 is 21311121024402.

It is an interprime number because it is at equal distance from previous prime (20442012111293) and next prime (20442012111331).

It is a super-2 number, since 2×20442012111312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2969924223 + ... + 2969931105.

Almost surely, 2^{20442012111312} is an apocalyptic number.

20442012111312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20442012111312 is an abundant number, since it is smaller than the sum of its proper divisors (37224269439024).

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

20442012111312 is a wasteful number, since it uses less digits than its factorization.

20442012111312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11649 (or 11643 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 20442012111312 its reverse (21311121024402), we get a palindrome (41753133135714).

The spelling of 20442012111312 in words is "twenty trillion, four hundred forty-two billion, twelve million, one hundred eleven thousand, three hundred twelve".