23221211747 has 2 divisors, whose sum is σ = 23221211748. Its totient is φ = 23221211746.

The previous prime is 23221211639. The next prime is 23221211773. The reversal of 23221211747 is 74711212232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23221211747 - 2⁸ = 23221211491 is a prime.

It is not a weakly prime, because it can be changed into another prime (23221211777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610605873 + 11610605874.

It is an arithmetic number, because the mean of its divisors is an integer number (11610605874).

Almost surely, 2^23221211747 is an apocalyptic number.

23221211747 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221211747 is an equidigital number, since it uses as much as digits as its factorization.

23221211747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 32.

Adding to 23221211747 its reverse (74711212232), we get a palindrome (97932423979).

The spelling of 23221211747 in words is "twenty-three billion, two hundred twenty-one million, two hundred eleven thousand, seven hundred forty-seven".