23121240200 has 24 divisors (see below), whose sum is σ = 53756883930. Its totient is φ = 9248496000.

The previous prime is 23121240187. The next prime is 23121240203. The reversal of 23121240200 is 204212132.

It can be written as a sum of positive squares in 3 ways, for example, as 12851849956 + 10269390244 = 113366^2 + 101338^2 .

It is not an unprimeable number, because it can be changed into a prime (23121240203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57802901 + ... + 57803300.

Almost surely, 2^23121240200 is an apocalyptic number.

23121240200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121240200 is an abundant number, since it is smaller than the sum of its proper divisors (30635643730).

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

23121240200 is a wasteful number, since it uses less digits than its factorization.

23121240200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115606217 (or 115606208 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 23121240200 its reverse (204212132), we get a palindrome (23325452332).

The spelling of 23121240200 in words is "twenty-three billion, one hundred twenty-one million, two hundred forty thousand, two hundred".