121322112111 has 24 divisors (see below), whose sum is σ = 182001633840. Its totient is φ = 77811186816.

The previous prime is 121322112077. The next prime is 121322112139. The reversal of 121322112111 is 111211223121.

It is a happy number.

121322112111 is a `hidden beast` number, since 121 + 322 + 11 + 211 + 1 = 666.

It is not a de Polignac number, because 121322112111 - 2⁷ = 121322111983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121322122111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2017165 + ... + 2076438.

It is an arithmetic number, because the mean of its divisors is an integer number (7583401410).

Almost surely, 2^121322112111 is an apocalyptic number.

121322112111 is a deficient number, since it is larger than the sum of its proper divisors (60679521729).

121322112111 is a wasteful number, since it uses less digits than its factorization.

121322112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093735 (or 4093732 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 121322112111 its reverse (111211223121), we get a palindrome (232533335232).

The spelling of 121322112111 in words is "one hundred twenty-one billion, three hundred twenty-two million, one hundred twelve thousand, one hundred eleven".