2221171423 has 2 divisors, whose sum is σ = 2221171424. Its totient is φ = 2221171422.

The previous prime is 2221171409. The next prime is 2221171429. The reversal of 2221171423 is 3241711222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221171423 - 2⁹ = 2221170911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221171429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110585711 + 1110585712.

It is an arithmetic number, because the mean of its divisors is an integer number (1110585712).

Almost surely, 2^2221171423 is an apocalyptic number.

2221171423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221171423 is an equidigital number, since it uses as much as digits as its factorization.

2221171423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 2221171423 is about 47129.3053524026. The cubic root of 2221171423 is about 1304.7501609671.

Adding to 2221171423 its reverse (3241711222), we get a palindrome (5462882645).

The spelling of 2221171423 in words is "two billion, two hundred twenty-one million, one hundred seventy-one thousand, four hundred twenty-three".