122120111022111 has 160 divisors (see below), whose sum is σ = 188605538795520. Its totient is φ = 78706161000000.

The previous prime is 122120111022043. The next prime is 122120111022121. The reversal of 122120111022111 is 111220111021221.

It is a happy number.

122120111022111 is a `hidden beast` number, since 1 + 221 + 201 + 1 + 10 + 221 + 11 = 666.

It is not a de Polignac number, because 122120111022111 - 2⁷ = 122120111021983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120111022121) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 119843091760 + ... + 119843092778.

It is an arithmetic number, because the mean of its divisors is an integer number (1178784617472).

Almost surely, 2^{122120111022111} is an apocalyptic number.

122120111022111 is a deficient number, since it is larger than the sum of its proper divisors (66485427773409).

122120111022111 is a wasteful number, since it uses less digits than its factorization.

122120111022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2238 counting only the distinct ones).

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

Adding to 122120111022111 its reverse (111220111021221), we get a palindrome (233340222043332).

The spelling of 122120111022111 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred eleven million, twenty-two thousand, one hundred eleven".