121222110112011 has 12 divisors (see below), whose sum is σ = 175105767360888. Its totient is φ = 80811433675104.

The previous prime is 121222110111997. The next prime is 121222110112057. The reversal of 121222110112011 is 110211011222121.

It is a happy number.

121222110112011 is a `hidden beast` number, since 1 + 212 + 221 + 101 + 120 + 11 = 666.

It is not a de Polignac number, because 121222110112011 - 2²⁶ = 121222043003147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121222110112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275301090 + ... + 275741063.

It is an arithmetic number, because the mean of its divisors is an integer number (14592147280074).

Almost surely, 2^{121222110112011} is an apocalyptic number.

121222110112011 is a deficient number, since it is larger than the sum of its proper divisors (53883657248877).

121222110112011 is a wasteful number, since it uses less digits than its factorization.

121222110112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551066602 (or 551066599 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121222110112011 its reverse (110211011222121), we get a palindrome (231433121334132).

The spelling of 121222110112011 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twelve thousand, eleven".