23201121200 has 120 divisors (see below), whose sum is σ = 58247486208. Its totient is φ = 8864247040.

The previous prime is 23201121193. The next prime is 23201121211. The reversal of 23201121200 is 212110232.

It is a happy 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, 8711069 + ... + 8713731.

Almost surely, 2^23201121200 is an apocalyptic number.

23201121200 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 23201121200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29123743104).

23201121200 is an abundant number, since it is smaller than the sum of its proper divisors (35046365008).

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

23201121200 is a wasteful number, since it uses less digits than its factorization.

23201121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 23201121200 its reverse (212110232), we get a palindrome (23413231432).

The spelling of 23201121200 in words is "twenty-three billion, two hundred one million, one hundred twenty-one thousand, two hundred".