121112021122211 has 32 divisors (see below), whose sum is σ = 147625731686400. Its totient is φ = 97047235153440.

The previous prime is 121112021122201. The next prime is 121112021122229. The reversal of 121112021122211 is 112221120211121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121112021122211 - 2⁴² = 116713974611107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121112021122201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15501566 + ... + 21966396.

It is an arithmetic number, because the mean of its divisors is an integer number (4613304115200).

Almost surely, 2^{121112021122211} is an apocalyptic number.

121112021122211 is a deficient number, since it is larger than the sum of its proper divisors (26513710564189).

121112021122211 is a wasteful number, since it uses less digits than its factorization.

121112021122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466719.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121112021122211 its reverse (112221120211121), we get a palindrome (233333141333332).

The spelling of 121112021122211 in words is "one hundred twenty-one trillion, one hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred eleven".