100012210121 has 8 divisors (see below), whose sum is σ = 101250203040. Its totient is φ = 98775003712.

The previous prime is 100012210091. The next prime is 100012210139. The reversal of 100012210121 is 121012210001.

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

It is a cyclic number.

It is not a de Polignac number, because 100012210121 - 2¹⁰ = 100012209097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100012210141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61346 + ... + 451428.

It is an arithmetic number, because the mean of its divisors is an integer number (12656275380).

Almost surely, 2^100012210121 is an apocalyptic number.

It is an amenable number.

100012210121 is a deficient number, since it is larger than the sum of its proper divisors (1237992919).

100012210121 is an equidigital number, since it uses as much as digits as its factorization.

100012210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393255.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100012210121 its reverse (121012210001), we get a palindrome (221024420122).

The spelling of 100012210121 in words is "one hundred billion, twelve million, two hundred ten thousand, one hundred twenty-one".