23204434211421 has 4 divisors (see below), whose sum is σ = 30939245615232. Its totient is φ = 15469622807612.

The previous prime is 23204434211377. The next prime is 23204434211437. The reversal of 23204434211421 is 12411243440232.

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 23204434211421 - 2⁷ = 23204434211293 is a prime.

It is a super-2 number, since 2×23204434211421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23204434211521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3867405701901 + ... + 3867405701906.

It is an arithmetic number, because the mean of its divisors is an integer number (7734811403808).

Almost surely, 2^{23204434211421} is an apocalyptic number.

It is an amenable number.

23204434211421 is a deficient number, since it is larger than the sum of its proper divisors (7734811403811).

23204434211421 is an equidigital number, since it uses as much as digits as its factorization.

23204434211421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7734811403810.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 23204434211421 its reverse (12411243440232), we get a palindrome (35615677651653).

The spelling of 23204434211421 in words is "twenty-three trillion, two hundred four billion, four hundred thirty-four million, two hundred eleven thousand, four hundred twenty-one".