21223122430 has 8 divisors (see below), whose sum is σ = 38201620392. Its totient is φ = 8489248968.

The previous prime is 21223122413. The next prime is 21223122449. The reversal of 21223122430 is 3422132212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 1061156112 + ... + 1061156131.

It is an arithmetic number, because the mean of its divisors is an integer number (4775202549).

Almost surely, 2^21223122430 is an apocalyptic number.

21223122430 is a deficient number, since it is larger than the sum of its proper divisors (16978497962).

21223122430 is a wasteful number, since it uses less digits than its factorization.

21223122430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122312250.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21223122430 its reverse (3422132212), we get a palindrome (24645254642).

The spelling of 21223122430 in words is "twenty-one billion, two hundred twenty-three million, one hundred twenty-two thousand, four hundred thirty".