122111312142 has 32 divisors (see below), whose sum is σ = 244570129920. Its totient is φ = 40645892960.

The previous prime is 122111312111. The next prime is 122111312143. The reversal of 122111312142 is 241213111221.

It is a super-2 number, since 2×122111312142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111312143) 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, 24821959 + ... + 24826877.

It is an arithmetic number, because the mean of its divisors is an integer number (7642816560).

Almost surely, 2^122111312142 is an apocalyptic number.

122111312142 is an abundant number, since it is smaller than the sum of its proper divisors (122458817778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122111312142 is a wasteful number, since it uses less digits than its factorization.

122111312142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968.

The product of its digits is 192, while the sum is 21.

Adding to 122111312142 its reverse (241213111221), we get a palindrome (363324423363).

The spelling of 122111312142 in words is "one hundred twenty-two billion, one hundred eleven million, three hundred twelve thousand, one hundred forty-two".