123220122120 has 48 divisors (see below), whose sum is σ = 400465398060. Its totient is φ = 32858699136.

The previous prime is 123220122107. The next prime is 123220122203. The reversal of 123220122120 is 21221022321.

It can be written as a sum of positive squares in 2 ways, for example, as 122826417156 + 393704964 = 350466^2 + 19842^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123220122093 and 123220122102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171138699 + ... + 171139418.

Almost surely, 2^123220122120 is an apocalyptic number.

123220122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123220122120 is an abundant number, since it is smaller than the sum of its proper divisors (277245275940).

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

123220122120 is a wasteful number, since it uses less digits than its factorization.

123220122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342278134 (or 342278127 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 123220122120 its reverse (21221022321), we get a palindrome (144441144441).

The spelling of 123220122120 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred twenty-two thousand, one hundred twenty".