221441719 has 2 divisors, whose sum is σ = 221441720. Its totient is φ = 221441718.

The previous prime is 221441699. The next prime is 221441821. The reversal of 221441719 is 917144122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221441719 - 2¹⁷ = 221310647 is a prime.

It is a super-2 number, since 2×221441719² = 98072869827349922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221442719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110720859 + 110720860.

It is an arithmetic number, because the mean of its divisors is an integer number (110720860).

Almost surely, 2^221441719 is an apocalyptic number.

221441719 is a deficient number, since it is larger than the sum of its proper divisors (1).

221441719 is an equidigital number, since it uses as much as digits as its factorization.

221441719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 221441719 is about 14880.9179488364. The cubic root of 221441719 is about 604.9968981923.

The spelling of 221441719 in words is "two hundred twenty-one million, four hundred forty-one thousand, seven hundred nineteen".