20020400112 has 80 divisors (see below), whose sum is σ = 52174830240. Its totient is φ = 6614962176.

The previous prime is 20020400107. The next prime is 20020400171. The reversal of 20020400112 is 21100402002.

It is a super-2 number, since 2×20020400112² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 2557228 + ... + 2565044.

It is an arithmetic number, because the mean of its divisors is an integer number (652185378).

Almost surely, 2^20020400112 is an apocalyptic number.

It is an amenable number.

20020400112 is an abundant number, since it is smaller than the sum of its proper divisors (32154430128).

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

20020400112 is a wasteful number, since it uses less digits than its factorization.

20020400112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8290 (or 8284 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020400112 its reverse (21100402002), we get a palindrome (41120802114).

The spelling of 20020400112 in words is "twenty billion, twenty million, four hundred thousand, one hundred twelve".