122122122100111 has 16 divisors (see below), whose sum is σ = 148543719407424. Its totient is φ = 98008227201024.

The previous prime is 122122122100087. The next prime is 122122122100133. The reversal of 122122122100111 is 111001221221221.

It is a happy number.

It is not a de Polignac number, because 122122122100111 - 2⁵ = 122122122100079 is a prime.

It is a super-2 number, since 2×122122122100111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122123100111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2658620350 + ... + 2658666283.

It is an arithmetic number, because the mean of its divisors is an integer number (9283982462964).

Almost surely, 2^{122122122100111} is an apocalyptic number.

122122122100111 is a deficient number, since it is larger than the sum of its proper divisors (26421597307313).

122122122100111 is a wasteful number, since it uses less digits than its factorization.

122122122100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317286850.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122122122100111 its reverse (111001221221221), we get a palindrome (233123343321332).

The spelling of 122122122100111 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred thousand, one hundred eleven".