100101012121 has 4 divisors (see below), whose sum is σ = 109201104144. Its totient is φ = 91000920100.

The previous prime is 100101012079. The next prime is 100101012133. The reversal of 100101012121 is 121210101001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100101012121 - 2¹¹ = 100101010073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100101012098 and 100101012107.

It is not an unprimeable number, because it can be changed into a prime (100101016121) 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, 4550045995 + ... + 4550046016.

It is an arithmetic number, because the mean of its divisors is an integer number (27300276036).

Almost surely, 2^100101012121 is an apocalyptic number.

100101012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100101012121 is a deficient number, since it is larger than the sum of its proper divisors (9100092023).

100101012121 is an equidigital number, since it uses as much as digits as its factorization.

100101012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100092022.

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

Adding to 100101012121 its reverse (121210101001), we get a palindrome (221311113122).

The spelling of 100101012121 in words is "one hundred billion, one hundred one million, twelve thousand, one hundred twenty-one".