22454433445421 has 4 divisors (see below), whose sum is σ = 22835017063200. Its totient is φ = 22073849827644.

The previous prime is 22454433445333. The next prime is 22454433445471. The reversal of 22454433445421 is 12454433445422.

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 22454433445421 - 2²² = 22454429251117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22454433445471) 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, 190291808801 + ... + 190291808918.

It is an arithmetic number, because the mean of its divisors is an integer number (5708754265800).

Almost surely, 2^{22454433445421} is an apocalyptic number.

It is an amenable number.

22454433445421 is a deficient number, since it is larger than the sum of its proper divisors (380583617779).

22454433445421 is an equidigital number, since it uses as much as digits as its factorization.

22454433445421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380583617778.

The product of its digits is 7372800, while the sum is 47.

Subtracting from 22454433445421 its reverse (12454433445422), we obtain a palindrome (9999999999999).

The spelling of 22454433445421 in words is "twenty-two trillion, four hundred fifty-four billion, four hundred thirty-three million, four hundred forty-five thousand, four hundred twenty-one".