100111020211121 has 4 divisors (see below), whose sum is σ = 100111109638512. Its totient is φ = 100110930783732.

The previous prime is 100111020211073. The next prime is 100111020211123. The reversal of 100111020211121 is 121112020111001.

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 100111020211121 - 2⁶ = 100111020211057 is a prime.

It is a super-2 number, since 2×100111020211121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111020211096 and 100111020211105.

It is not an unprimeable number, because it can be changed into a prime (100111020211123) 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, 43012931 + ... + 45280616.

It is an arithmetic number, because the mean of its divisors is an integer number (25027777409628).

Almost surely, 2^{100111020211121} is an apocalyptic number.

It is an amenable number.

100111020211121 is a deficient number, since it is larger than the sum of its proper divisors (89427391).

100111020211121 is an equidigital number, since it uses as much as digits as its factorization.

100111020211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89427390.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100111020211121 its reverse (121112020111001), we get a palindrome (221223040322122).

The spelling of 100111020211121 in words is "one hundred trillion, one hundred eleven billion, twenty million, two hundred eleven thousand, one hundred twenty-one".