23221004201 has 2 divisors, whose sum is σ = 23221004202. Its totient is φ = 23221004200.

The previous prime is 23221004173. The next prime is 23221004227. The reversal of 23221004201 is 10240012232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21874114201 + 1346890000 = 147899^2 + 36700^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221004201 - 2¹⁰ = 23221003177 is a prime.

It is a super-2 number, since 2×23221004201² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23221004201.

It is not a weakly prime, because it can be changed into another prime (23221004101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610502100 + 11610502101.

It is an arithmetic number, because the mean of its divisors is an integer number (11610502101).

Almost surely, 2^23221004201 is an apocalyptic number.

It is an amenable number.

23221004201 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221004201 is an equidigital number, since it uses as much as digits as its factorization.

23221004201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 23221004201 its reverse (10240012232), we get a palindrome (33461016433).

The spelling of 23221004201 in words is "twenty-three billion, two hundred twenty-one million, four thousand, two hundred one".