100020011120 has 20 divisors (see below), whose sum is σ = 232546526040. Its totient is φ = 40008004416.

The previous prime is 100020011051. The next prime is 100020011123. The reversal of 100020011120 is 21110020001.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 100020011098 and 100020011107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020011123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625124990 + ... + 625125149.

It is an arithmetic number, because the mean of its divisors is an integer number (11627326302).

Almost surely, 2^100020011120 is an apocalyptic number.

100020011120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020011120 is an abundant number, since it is smaller than the sum of its proper divisors (132526514920).

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

100020011120 is a wasteful number, since it uses less digits than its factorization.

100020011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250250152 (or 1250250146 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 100020011120 its reverse (21110020001), we get a palindrome (121130031121).

The spelling of 100020011120 in words is "one hundred billion, twenty million, eleven thousand, one hundred twenty".