231122213200 has 120 divisors (see below), whose sum is σ = 562705323840. Its totient is φ = 91215590400.

The previous prime is 231122213131. The next prime is 231122213207. The reversal of 231122213200 is 2312221132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231122213207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17330535 + ... + 17343865.

It is an arithmetic number, because the mean of its divisors is an integer number (4689211032).

Almost surely, 2^231122213200 is an apocalyptic number.

231122213200 is a gapful number since it is divisible by the number (20) 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 231122213200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281352661920).

231122213200 is an abundant number, since it is smaller than the sum of its proper divisors (331583110640).

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

231122213200 is a wasteful number, since it uses less digits than its factorization.

231122213200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13925 (or 13914 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231122213200 its reverse (2312221132), we get a palindrome (233434434332).

The spelling of 231122213200 in words is "two hundred thirty-one billion, one hundred twenty-two million, two hundred thirteen thousand, two hundred".