100122121111211 has 4 divisors (see below), whose sum is σ = 100322766645000. Its totient is φ = 99921475577424.

The previous prime is 100122121111169. The next prime is 100122121111223. The reversal of 100122121111211 is 112111121221001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100122121111211 - 2⁶ = 100122121111147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100122121111211.

It is not an unprimeable number, because it can be changed into a prime (100122121111231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100322766146 + ... + 100322767143.

It is an arithmetic number, because the mean of its divisors is an integer number (25080691661250).

Almost surely, 2^{100122121111211} is an apocalyptic number.

100122121111211 is a deficient number, since it is larger than the sum of its proper divisors (200645533789).

100122121111211 is an equidigital number, since it uses as much as digits as its factorization.

100122121111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200645533788.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 100122121111211 its reverse (112111121221001), we get a palindrome (212233242332212).

The spelling of 100122121111211 in words is "one hundred trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, two hundred eleven".