122111112220111 has 64 divisors (see below), whose sum is σ = 150898805065728. Its totient is φ = 96439076794368.

The previous prime is 122111112220099. The next prime is 122111112220177. The reversal of 122111112220111 is 111022211111221.

It is not a de Polignac number, because 122111112220111 - 2⁵ = 122111112220079 is a prime.

It is a super-2 number, since 2×122111112220111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111112220711) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3631756446 + ... + 3631790068.

It is an arithmetic number, because the mean of its divisors is an integer number (2357793829152).

Almost surely, 2^{122111112220111} is an apocalyptic number.

122111112220111 is a deficient number, since it is larger than the sum of its proper divisors (28787692845617).

122111112220111 is a wasteful number, since it uses less digits than its factorization.

122111112220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36520.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 122111112220111 its reverse (111022211111221), we get a palindrome (233133323331332).

The spelling of 122111112220111 in words is "one hundred twenty-two trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty thousand, one hundred eleven".