100020131112 has 64 divisors (see below), whose sum is σ = 278586086400. Its totient is φ = 29664251840.

The previous prime is 100020131077. The next prime is 100020131149. The reversal of 100020131112 is 211131020001.

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

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, 4018062 + ... + 4042877.

It is an arithmetic number, because the mean of its divisors is an integer number (4352907600).

Almost surely, 2^100020131112 is an apocalyptic number.

100020131112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100020131112 is an abundant number, since it is smaller than the sum of its proper divisors (178565955288).

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

100020131112 is a wasteful number, since it uses less digits than its factorization.

100020131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061006 (or 8061002 counting only the distinct ones).

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

Adding to 100020131112 its reverse (211131020001), we get a palindrome (311151151113).

Subtracting 100020131112 from its reverse (211131020001), we obtain a square (111110888889 = 333333²).

It can be divided in two parts, 100020 and 131112, that added together give a palindrome (231132).

The spelling of 100020131112 in words is "one hundred billion, twenty million, one hundred thirty-one thousand, one hundred twelve".