122110012111 has 4 divisors (see below), whose sum is σ = 122110737112. Its totient is φ = 122109287112.

The previous prime is 122110012099. The next prime is 122110012133. The reversal of 122110012111 is 111210011221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 111210011221 = 2473 ⋅44969677.

It is a cyclic number.

It is not a de Polignac number, because 122110012111 - 2⁷ = 122110011983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122110012091 and 122110012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122110042111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36625 + ... + 495541.

It is an arithmetic number, because the mean of its divisors is an integer number (30527684278).

Almost surely, 2^122110012111 is an apocalyptic number.

122110012111 is a deficient number, since it is larger than the sum of its proper divisors (725001).

122110012111 is an equidigital number, since it uses as much as digits as its factorization.

122110012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725000.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122110012111 its reverse (111210011221), we get a palindrome (233320023332).

The spelling of 122110012111 in words is "one hundred twenty-two billion, one hundred ten million, twelve thousand, one hundred eleven".