23421221303 has 2 divisors, whose sum is σ = 23421221304. Its totient is φ = 23421221302.

The previous prime is 23421221281. The next prime is 23421221311. The reversal of 23421221303 is 30312212432.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23421221303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23421221393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710610651 + 11710610652.

It is an arithmetic number, because the mean of its divisors is an integer number (11710610652).

Almost surely, 2^23421221303 is an apocalyptic number.

23421221303 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421221303 is an equidigital number, since it uses as much as digits as its factorization.

23421221303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 23421221303 its reverse (30312212432), we get a palindrome (53733433735).

The spelling of 23421221303 in words is "twenty-three billion, four hundred twenty-one million, two hundred twenty-one thousand, three hundred three".