123031122120220 has 12 divisors (see below), whose sum is σ = 258365356452504. Its totient is φ = 49212448848080.

The previous prime is 123031122120197. The next prime is 123031122120289. The reversal of 123031122120220 is 22021221130321.

It is a junction number, because it is equal to n+sod(n) for n = 123031122120191 and 123031122120200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075778052986 + ... + 3075778053025.

It is an arithmetic number, because the mean of its divisors is an integer number (21530446371042).

Almost surely, 2^{123031122120220} is an apocalyptic number.

123031122120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031122120220 is an abundant number, since it is smaller than the sum of its proper divisors (135334234332284).

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

123031122120220 is a wasteful number, since it uses less digits than its factorization.

123031122120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6151556106020 (or 6151556106018 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 123031122120220 its reverse (22021221130321), we get a palindrome (145052343250541).

The spelling of 123031122120220 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty".