23430404433221 has 4 divisors (see below), whose sum is σ = 24449117669472. Its totient is φ = 22411691196972.

The previous prime is 23430404433217. The next prime is 23430404433229. The reversal of 23430404433221 is 12233440403432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23430404433221 - 2² = 23430404433217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23430404433229) 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, 509356618091 + ... + 509356618136.

It is an arithmetic number, because the mean of its divisors is an integer number (6112279417368).

Almost surely, 2^{23430404433221} is an apocalyptic number.

It is an amenable number.

23430404433221 is a deficient number, since it is larger than the sum of its proper divisors (1018713236251).

23430404433221 is a wasteful number, since it uses less digits than its factorization.

23430404433221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018713236250.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 23430404433221 its reverse (12233440403432), we get a palindrome (35663844836653).

The spelling of 23430404433221 in words is "twenty-three trillion, four hundred thirty billion, four hundred four million, four hundred thirty-three thousand, two hundred twenty-one".