23221201541 has 2 divisors, whose sum is σ = 23221201542. Its totient is φ = 23221201540.

The previous prime is 23221201501. The next prime is 23221201543. The reversal of 23221201541 is 14510212232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23143232641 + 77968900 = 152129^2 + 8830^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221201541 - 2²⁶ = 23154092677 is a prime.

Together with 23221201543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23221201543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610600770 + 11610600771.

It is an arithmetic number, because the mean of its divisors is an integer number (11610600771).

Almost surely, 2^23221201541 is an apocalyptic number.

It is an amenable number.

23221201541 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221201541 is an equidigital number, since it uses as much as digits as its factorization.

23221201541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 23221201541 its reverse (14510212232), we get a palindrome (37731413773).

The spelling of 23221201541 in words is "twenty-three billion, two hundred twenty-one million, two hundred one thousand, five hundred forty-one".