123234432220 has 48 divisors (see below), whose sum is σ = 269824343040. Its totient is φ = 47219203584.

The previous prime is 123234432203. The next prime is 123234432227. The reversal of 123234432220 is 22234432321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123234432227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762849 + ... + 910168.

It is an arithmetic number, because the mean of its divisors is an integer number (5621340480).

Almost surely, 2^123234432220 is an apocalyptic number.

123234432220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123234432220 is an abundant number, since it is smaller than the sum of its proper divisors (146589910820).

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

123234432220 is a wasteful number, since it uses less digits than its factorization.

123234432220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673182 (or 1673180 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 123234432220 its reverse (22234432321), we get a palindrome (145468864541).

The spelling of 123234432220 in words is "one hundred twenty-three billion, two hundred thirty-four million, four hundred thirty-two thousand, two hundred twenty".