121110220211 has 4 divisors (see below), whose sum is σ = 121786813800. Its totient is φ = 120433626624.

The previous prime is 121110220177. The next prime is 121110220213. The reversal of 121110220211 is 112022011121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121110220211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121110220213) 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, 338296526 + ... + 338296883.

It is an arithmetic number, because the mean of its divisors is an integer number (30446703450).

Almost surely, 2^121110220211 is an apocalyptic number.

121110220211 is a deficient number, since it is larger than the sum of its proper divisors (676593589).

121110220211 is an equidigital number, since it uses as much as digits as its factorization.

121110220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676593588.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121110220211 its reverse (112022011121), we get a palindrome (233132231332).

The spelling of 121110220211 in words is "one hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, two hundred eleven".