122200242172 has 12 divisors (see below), whose sum is σ = 214224946936. Its totient is φ = 60993114480.

The previous prime is 122200242119. The next prime is 122200242173. The reversal of 122200242172 is 271242002221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200242173) 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, 26749083 + ... + 26753650.

Almost surely, 2^122200242172 is an apocalyptic number.

It is an amenable number.

122200242172 is a deficient number, since it is larger than the sum of its proper divisors (92024704764).

122200242172 is a wasteful number, since it uses less digits than its factorization.

122200242172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53503308 (or 53503306 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 122200242172 its reverse (271242002221), we get a palindrome (393442244393).

The spelling of 122200242172 in words is "one hundred twenty-two billion, two hundred million, two hundred forty-two thousand, one hundred seventy-two".