121110100211 has 4 divisors (see below), whose sum is σ = 121146462024. Its totient is φ = 121073738400.

The previous prime is 121110100207. The next prime is 121110100247. The reversal of 121110100211 is 112001011121.

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 121110100211 - 2² = 121110100207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121110100192 and 121110100201.

It is not an unprimeable number, because it can be changed into a prime (121110100291) 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, 18175910 + ... + 18182571.

It is an arithmetic number, because the mean of its divisors is an integer number (30286615506).

Almost surely, 2^121110100211 is an apocalyptic number.

121110100211 is a deficient number, since it is larger than the sum of its proper divisors (36361813).

121110100211 is an equidigital number, since it uses as much as digits as its factorization.

121110100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36361812.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121110100211 its reverse (112001011121), we get a palindrome (233111111332).

The spelling of 121110100211 in words is "one hundred twenty-one billion, one hundred ten million, one hundred thousand, two hundred eleven".