23122421 has 8 divisors (see below), whose sum is σ = 26464704. Its totient is φ = 19789920.

The previous prime is 23122409. The next prime is 23122427. The reversal of 23122421 is 12422132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23122421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23122421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641 + ... + 7713.

It is an arithmetic number, because the mean of its divisors is an integer number (3308088).

Almost surely, 2^23122421 is an apocalyptic number.

It is an amenable number.

23122421 is a deficient number, since it is larger than the sum of its proper divisors (3342283).

23122421 is an equidigital number, since it uses as much as digits as its factorization.

23122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4891.

The product of its digits is 192, while the sum is 17.

The square root of 23122421 is about 4808.5778562897. The cubic root of 23122421 is about 284.8903692425.

Adding to 23122421 its reverse (12422132), we get a palindrome (35544553).

The spelling of 23122421 in words is "twenty-three million, one hundred twenty-two thousand, four hundred twenty-one".