123221220032 has 28 divisors (see below), whose sum is σ = 247037915880. Its totient is φ = 60975446016.

The previous prime is 123221220019. The next prime is 123221220091. The reversal of 123221220032 is 230022122321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123221219986 and 123221220013.

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, 9918182 + ... + 9930597.

It is an arithmetic number, because the mean of its divisors is an integer number (8822782710).

Almost surely, 2^123221220032 is an apocalyptic number.

It is an amenable number.

123221220032 is an abundant number, since it is smaller than the sum of its proper divisors (123816695848).

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

123221220032 is an equidigital number, since it uses as much as digits as its factorization.

123221220032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19848888 (or 19848878 counting only the distinct ones).

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

Adding to 123221220032 its reverse (230022122321), we get a palindrome (353243342353).

The spelling of 123221220032 in words is "one hundred twenty-three billion, two hundred twenty-one million, two hundred twenty thousand, thirty-two".