100113121211 has 4 divisors (see below), whose sum is σ = 100901413632. Its totient is φ = 99324828792.

The previous prime is 100113121181. The next prime is 100113121219. The reversal of 100113121211 is 112121311001.

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 100113121211 - 2¹⁰ = 100113120187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100113121219) 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, 394146020 + ... + 394146273.

It is an arithmetic number, because the mean of its divisors is an integer number (25225353408).

Almost surely, 2^100113121211 is an apocalyptic number.

100113121211 is a deficient number, since it is larger than the sum of its proper divisors (788292421).

100113121211 is an equidigital number, since it uses as much as digits as its factorization.

100113121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788292420.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 100113121211 its reverse (112121311001), we get a palindrome (212234432212).

It can be divided in two parts, 100 and 113121211, that added together give a palindrome (113121311).

The spelling of 100113121211 in words is "one hundred billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred eleven".