23211363421 has 2 divisors, whose sum is σ = 23211363422. Its totient is φ = 23211363420.

The previous prime is 23211363397. The next prime is 23211363431. The reversal of 23211363421 is 12436311232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23099744196 + 111619225 = 151986^2 + 10565^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211363421 - 2⁷ = 23211363293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23211363421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211363431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605681710 + 11605681711.

It is an arithmetic number, because the mean of its divisors is an integer number (11605681711).

Almost surely, 2^23211363421 is an apocalyptic number.

It is an amenable number.

23211363421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211363421 is an equidigital number, since it uses as much as digits as its factorization.

23211363421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

Adding to 23211363421 its reverse (12436311232), we get a palindrome (35647674653).

The spelling of 23211363421 in words is "twenty-three billion, two hundred eleven million, three hundred sixty-three thousand, four hundred twenty-one".