100000212010121 has 4 divisors (see below), whose sum is σ = 101492752487952. Its totient is φ = 98507671532292.

The previous prime is 100000212010109. The next prime is 100000212010123. The reversal of 100000212010121 is 121010212000001.

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 100000212010121 - 2¹⁰ = 100000212009097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000212010123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746270238815 + ... + 746270238948.

It is an arithmetic number, because the mean of its divisors is an integer number (25373188121988).

Almost surely, 2^{100000212010121} is an apocalyptic number.

It is an amenable number.

100000212010121 is a deficient number, since it is larger than the sum of its proper divisors (1492540477831).

100000212010121 is an equidigital number, since it uses as much as digits as its factorization.

100000212010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492540477830.

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

Adding to 100000212010121 its reverse (121010212000001), we get a palindrome (221010424010122).

The spelling of 100000212010121 in words is "one hundred trillion, two hundred twelve million, ten thousand, one hundred twenty-one".