123201321222 has 48 divisors (see below), whose sum is σ = 287046925632. Its totient is φ = 35149378320.

The previous prime is 123201321179. The next prime is 123201321253. The reversal of 123201321222 is 222123102321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100068 + ... + 506375.

It is an arithmetic number, because the mean of its divisors is an integer number (5980144284).

Almost surely, 2^123201321222 is an apocalyptic number.

123201321222 is an abundant number, since it is smaller than the sum of its proper divisors (163845604410).

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

123201321222 is a wasteful number, since it uses less digits than its factorization.

123201321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607153 (or 607146 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 123201321222 its reverse (222123102321), we get a palindrome (345324423543).

The spelling of 123201321222 in words is "one hundred twenty-three billion, two hundred one million, three hundred twenty-one thousand, two hundred twenty-two".