100101010121 has 16 divisors (see below), whose sum is σ = 121328325504. Its totient is φ = 80621961984.

The previous prime is 100101010117. The next prime is 100101010183. The reversal of 100101010121 is 121010101001.

It is a happy number.

It is not a de Polignac number, because 100101010121 - 2² = 100101010117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100101010099 and 100101010108.

It is not an unprimeable number, because it can be changed into a prime (100101010421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613175 + ... + 759068.

It is an arithmetic number, because the mean of its divisors is an integer number (7583020344).

Almost surely, 2^100101010121 is an apocalyptic number.

It is an amenable number.

100101010121 is a deficient number, since it is larger than the sum of its proper divisors (21227315383).

100101010121 is a wasteful number, since it uses less digits than its factorization.

100101010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372880.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100101010121 its reverse (121010101001), we get a palindrome (221111111122).

The spelling of 100101010121 in words is "one hundred billion, one hundred one million, ten thousand, one hundred twenty-one".