122231231320 has 64 divisors (see below), whose sum is σ = 300446042400. Its totient is φ = 44384916480.

The previous prime is 122231231279. The next prime is 122231231323. The reversal of 122231231320 is 23132132221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 122231231291 and 122231231300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122231231323) 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, 116052 + ... + 507868.

Almost surely, 2^122231231320 is an apocalyptic number.

122231231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122231231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150223021200).

122231231320 is an abundant number, since it is smaller than the sum of its proper divisors (178214811080).

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

122231231320 is a wasteful number, since it uses less digits than its factorization.

122231231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392548 (or 392544 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 122231231320 its reverse (23132132221), we get a palindrome (145363363541).

Subtracting from 122231231320 its reverse (23132132221), we obtain a palindrome (99099099099).

The spelling of 122231231320 in words is "one hundred twenty-two billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty".