2219999 has 2 divisors, whose sum is σ = 2220000. Its totient is φ = 2219998.

The previous prime is 2219977. The next prime is 2220007. The reversal of 2219999 is 9999122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2219999 - 2¹² = 2215903 is a prime.

2219999 is a modest number, since divided by 9999 gives 221 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2219939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109999 + 1110000.

It is an arithmetic number, because the mean of its divisors is an integer number (1110000).

2^2219999 is an apocalyptic number.

2219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219999 is an equidigital number, since it uses as much as digits as its factorization.

2219999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 41.

The square root of 2219999 is about 1489.9661069971. The cubic root of 2219999 is about 130.4520554146.

It can be divided in two parts, 221999 and 9, that multiplied together give a palindrome (1997991).

The spelling of 2219999 in words is "two million, two hundred nineteen thousand, nine hundred ninety-nine".