23221322421 has 8 divisors (see below), whose sum is σ = 33776469024. Its totient is φ = 14073528720.

The previous prime is 23221322413. The next prime is 23221322429. The reversal of 23221322421 is 12422312232.

It is an interprime number because it is at equal distance from previous prime (23221322413) and next prime (23221322429).

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

It is not a de Polignac number, because 23221322421 - 2³ = 23221322413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23221322391 and 23221322400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221322429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351838186 + ... + 351838251.

It is an arithmetic number, because the mean of its divisors is an integer number (4222058628).

Almost surely, 2^23221322421 is an apocalyptic number.

It is an amenable number.

23221322421 is a deficient number, since it is larger than the sum of its proper divisors (10555146603).

23221322421 is a wasteful number, since it uses less digits than its factorization.

23221322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703676451.

The product of its digits is 2304, while the sum is 24.

Adding to 23221322421 its reverse (12422312232), we get a palindrome (35643634653).

The spelling of 23221322421 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty-two thousand, four hundred twenty-one".