100212111111121 has 4 divisors (see below), whose sum is σ = 100216877916672. Its totient is φ = 100207344305572.

The previous prime is 100212111111107. The next prime is 100212111111187. The reversal of 100212111111121 is 121111111212001.

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 100212111111121 - 2¹⁷ = 100212110980049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100212111111095 and 100212111111104.

It is not an unprimeable number, because it can be changed into a prime (100212111121121) 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, 2383371241 + ... + 2383413286.

It is an arithmetic number, because the mean of its divisors is an integer number (25054219479168).

Almost surely, 2^{100212111111121} is an apocalyptic number.

It is an amenable number.

100212111111121 is a deficient number, since it is larger than the sum of its proper divisors (4766805551).

100212111111121 is an equidigital number, since it uses as much as digits as its factorization.

100212111111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766805550.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 100212111111121 its reverse (121111111212001), we get a palindrome (221323222323122).

The spelling of 100212111111121 in words is "one hundred trillion, two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty-one".