23040115232221 has 4 divisors (see below), whose sum is σ = 24395416128252. Its totient is φ = 21684814336192.

The previous prime is 23040115232203. The next prime is 23040115232227. The reversal of 23040115232221 is 12223251104032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21320253472996 + 1719861759225 = 4617386^2 + 1311435^2 .

It is a cyclic number.

It is not a de Polignac number, because 23040115232221 - 2¹⁷ = 23040115101149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23040115232221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23040115232227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677650447990 + ... + 677650448023.

It is an arithmetic number, because the mean of its divisors is an integer number (6098854032063).

Almost surely, 2^{23040115232221} is an apocalyptic number.

It is an amenable number.

23040115232221 is a deficient number, since it is larger than the sum of its proper divisors (1355300896031).

23040115232221 is a wasteful number, since it uses less digits than its factorization.

23040115232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355300896030.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 23040115232221 its reverse (12223251104032), we get a palindrome (35263366336253).

The spelling of 23040115232221 in words is "twenty-three trillion, forty billion, one hundred fifteen million, two hundred thirty-two thousand, two hundred twenty-one".