23223251001421 has 2 divisors, whose sum is σ = 23223251001422. Its totient is φ = 23223251001420.

The previous prime is 23223251001409. The next prime is 23223251001451. The reversal of 23223251001421 is 12410015232232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18495039943396 + 4728211058025 = 4300586^2 + 2174445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23223251001421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23223251001421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23223251001451) 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, 11611625500710 + 11611625500711.

It is an arithmetic number, because the mean of its divisors is an integer number (11611625500711).

Almost surely, 2^{23223251001421} is an apocalyptic number.

It is an amenable number.

23223251001421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23223251001421 is an equidigital number, since it uses as much as digits as its factorization.

23223251001421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 23223251001421 its reverse (12410015232232), we get a palindrome (35633266233653).

The spelling of 23223251001421 in words is "twenty-three trillion, two hundred twenty-three billion, two hundred fifty-one million, one thousand, four hundred twenty-one".