2023221191 has 2 divisors, whose sum is σ = 2023221192. Its totient is φ = 2023221190.

The previous prime is 2023221157. The next prime is 2023221203. The reversal of 2023221191 is 1911223202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023221191 is a prime.

It is a super-2 number, since 2×2023221191² = 8186847975422916962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2023221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011610595 + 1011610596.

It is an arithmetic number, because the mean of its divisors is an integer number (1011610596).

Almost surely, 2^2023221191 is an apocalyptic number.

2023221191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023221191 is an equidigital number, since it uses as much as digits as its factorization.

2023221191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2023221191 is about 44980.2311132346. The cubic root of 2023221191 is about 1264.7784435990.

Adding to 2023221191 its reverse (1911223202), we get a palindrome (3934444393).

The spelling of 2023221191 in words is "two billion, twenty-three million, two hundred twenty-one thousand, one hundred ninety-one".