100120020121 has 8 divisors (see below), whose sum is σ = 109770696000. Its totient is φ = 90560820240.

The previous prime is 100120020113. The next prime is 100120020163. The reversal of 100120020121 is 121020021001.

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

It is not a de Polignac number, because 100120020121 - 2³ = 100120020113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100120020098 and 100120020107.

It is not an unprimeable number, because it can be changed into a prime (100120023121) 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, 22866706 + ... + 22871083.

It is an arithmetic number, because the mean of its divisors is an integer number (13721337000).

Almost surely, 2^100120020121 is an apocalyptic number.

100120020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100120020121 is a deficient number, since it is larger than the sum of its proper divisors (9650675879).

100120020121 is a wasteful number, since it uses less digits than its factorization.

100120020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45737999.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100120020121 its reverse (121020021001), we get a palindrome (221140041122).

The spelling of 100120020121 in words is "one hundred billion, one hundred twenty million, twenty thousand, one hundred twenty-one".