23204432402221 has 16 divisors (see below), whose sum is σ = 27375255298048. Its totient is φ = 19247606175600.

The previous prime is 23204432402201. The next prime is 23204432402227. The reversal of 23204432402221 is 12220423440232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23204432402221 - 2¹⁵ = 23204432369453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23204432402227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13163656 + ... + 14821966.

It is an arithmetic number, because the mean of its divisors is an integer number (1710953456128).

Almost surely, 2^{23204432402221} is an apocalyptic number.

It is an amenable number.

23204432402221 is a deficient number, since it is larger than the sum of its proper divisors (4170822895827).

23204432402221 is a wasteful number, since it uses less digits than its factorization.

23204432402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722832.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 23204432402221 its reverse (12220423440232), we get a palindrome (35424855842453).

The spelling of 23204432402221 in words is "twenty-three trillion, two hundred four billion, four hundred thirty-two million, four hundred two thousand, two hundred twenty-one".