100020111121 has 8 divisors (see below), whose sum is σ = 118250377920. Its totient is φ = 82775264208.

The previous prime is 100020111077. The next prime is 100020111143. The reversal of 100020111121 is 121111020001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100020111121 - 2⁹ = 100020110609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020111098 and 100020111107.

It is not an unprimeable number, because it can be changed into a prime (100020111181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246354751 + ... + 246355156.

It is an arithmetic number, because the mean of its divisors is an integer number (14781297240).

Almost surely, 2^100020111121 is an apocalyptic number.

It is an amenable number.

100020111121 is a deficient number, since it is larger than the sum of its proper divisors (18230266799).

100020111121 is an equidigital number, since it uses as much as digits as its factorization.

100020111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492709943.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100020111121 its reverse (121111020001), we get a palindrome (221131131122).

The spelling of 100020111121 in words is "one hundred billion, twenty million, one hundred eleven thousand, one hundred twenty-one".