23240133400221 has 6 divisors (see below), whose sum is σ = 33569081578110. Its totient is φ = 15493422266808.

The previous prime is 23240133400139. The next prime is 23240133400261. The reversal of 23240133400221 is 12200433104232.

23240133400221 is a `hidden beast` number, since 2 + 3 + 2 + 4 + 0 + 1 + 33 + 400 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14508374348196 + 8731759052025 = 3808986^2 + 2954955^2 .

It is not a de Polignac number, because 23240133400221 - 2⁷ = 23240133400093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240133400261) 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, 1291118522226 + ... + 1291118522243.

It is an arithmetic number, because the mean of its divisors is an integer number (5594846929685).

Almost surely, 2^{23240133400221} is an apocalyptic number.

It is an amenable number.

23240133400221 is a deficient number, since it is larger than the sum of its proper divisors (10328948177889).

23240133400221 is a wasteful number, since it uses less digits than its factorization.

23240133400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582237044475 (or 2582237044472 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 23240133400221 its reverse (12200433104232), we get a palindrome (35440566504453).

The spelling of 23240133400221 in words is "twenty-three trillion, two hundred forty billion, one hundred thirty-three million, four hundred thousand, two hundred twenty-one".