122116551111 has 12 divisors (see below), whose sum is σ = 177446806992. Its totient is φ = 80923541856.

The previous prime is 122116551101. The next prime is 122116551131. The reversal of 122116551111 is 111155611221.

122116551111 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 1 + 655 + 1 + 1 + 1 + 1 = 666.

It is not a de Polignac number, because 122116551111 - 2⁶ = 122116551047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122116551101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40622766 + ... + 40625771.

It is an arithmetic number, because the mean of its divisors is an integer number (14787233916).

Almost surely, 2^122116551111 is an apocalyptic number.

122116551111 is a deficient number, since it is larger than the sum of its proper divisors (55330255881).

122116551111 is a wasteful number, since it uses less digits than its factorization.

122116551111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81248710 (or 81248707 counting only the distinct ones).

The product of its digits is 600, while the sum is 27.

The spelling of 122116551111 in words is "one hundred twenty-two billion, one hundred sixteen million, five hundred fifty-one thousand, one hundred eleven".