123122320220 has 24 divisors (see below), whose sum is σ = 264863139408. Its totient is φ = 48047734400.

The previous prime is 123122320213. The next prime is 123122320231. The reversal of 123122320220 is 22023221321.

It is a happy number.

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 = 123122320192 and 123122320201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75073766 + ... + 75075405.

It is an arithmetic number, because the mean of its divisors is an integer number (11035964142).

Almost surely, 2^123122320220 is an apocalyptic number.

123122320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123122320220 is an abundant number, since it is smaller than the sum of its proper divisors (141740819188).

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

123122320220 is a wasteful number, since it uses less digits than its factorization.

123122320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150149221 (or 150149219 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 123122320220 its reverse (22023221321), we get a palindrome (145145541541).

The spelling of 123122320220 in words is "one hundred twenty-three billion, one hundred twenty-two million, three hundred twenty thousand, two hundred twenty".