122200131220 has 24 divisors (see below), whose sum is σ = 258103637064. Its totient is φ = 48597507456.

The previous prime is 122200131211. The next prime is 122200131253. The reversal of 122200131220 is 22131002221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56272379524 + 65927751696 = 237218^2 + 256764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122200131194 and 122200131203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17655519 + ... + 17662438.

It is an arithmetic number, because the mean of its divisors is an integer number (10754318211).

Almost surely, 2^122200131220 is an apocalyptic number.

122200131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122200131220 is an abundant number, since it is smaller than the sum of its proper divisors (135903505844).

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

122200131220 is a wasteful number, since it uses less digits than its factorization.

122200131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35318139 (or 35318137 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 122200131220 its reverse (22131002221), we get a palindrome (144331133441).

The spelling of 122200131220 in words is "one hundred twenty-two billion, two hundred million, one hundred thirty-one thousand, two hundred twenty".