23243212422421 has 2 divisors, whose sum is σ = 23243212422422. Its totient is φ = 23243212422420.

The previous prime is 23243212422389. The next prime is 23243212422433. The reversal of 23243212422421 is 12422421234232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14405440702500 + 8837771719921 = 3795450^2 + 2972839^2 .

It is a cyclic number.

It is not a de Polignac number, because 23243212422421 - 2⁵ = 23243212422389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23243212422821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11621606211210 + 11621606211211.

It is an arithmetic number, because the mean of its divisors is an integer number (11621606211211).

Almost surely, 2^{23243212422421} is an apocalyptic number.

It is an amenable number.

23243212422421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243212422421 is an equidigital number, since it uses as much as digits as its factorization.

23243212422421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 34.

Adding to 23243212422421 its reverse (12422421234232), we get a palindrome (35665633656653).

The spelling of 23243212422421 in words is "twenty-three trillion, two hundred forty-three billion, two hundred twelve million, four hundred twenty-two thousand, four hundred twenty-one".