122111122012220 has 48 divisors (see below), whose sum is σ = 279753413385600. Its totient is φ = 44402785024320.

The previous prime is 122111122012169. The next prime is 122111122012223. The reversal of 122111122012220 is 22210221111221.

It is a super-2 number, since 2×122111122012220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122111122012192 and 122111122012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111122012223) 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, 78650 + ... + 15627809.

It is an arithmetic number, because the mean of its divisors is an integer number (5828196112200).

Almost surely, 2^{122111122012220} is an apocalyptic number.

122111122012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122111122012220 is an abundant number, since it is smaller than the sum of its proper divisors (157642291373380).

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

122111122012220 is a wasteful number, since it uses less digits than its factorization.

122111122012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15741818 (or 15741816 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122111122012220 its reverse (22210221111221), we get a palindrome (144321343123441).

Subtracting from 122111122012220 its reverse (22210221111221), we obtain a palindrome (99900900900999).

The spelling of 122111122012220 in words is "one hundred twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, twelve thousand, two hundred twenty".