2221722623 has 2 divisors, whose sum is σ = 2221722624. Its totient is φ = 2221722622.

The previous prime is 2221722619. The next prime is 2221722689. The reversal of 2221722623 is 3262271222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221722623 - 2² = 2221722619 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221722023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110861311 + 1110861312.

It is an arithmetic number, because the mean of its divisors is an integer number (1110861312).

Almost surely, 2^2221722623 is an apocalyptic number.

2221722623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221722623 is an equidigital number, since it uses as much as digits as its factorization.

2221722623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 2221722623 is about 47135.1527312684. The cubic root of 2221722623 is about 1304.8580798187.

Adding to 2221722623 its reverse (3262271222), we get a palindrome (5483993845).

The spelling of 2221722623 in words is "two billion, two hundred twenty-one million, seven hundred twenty-two thousand, six hundred twenty-three".