22219013 has 2 divisors, whose sum is σ = 22219014. Its totient is φ = 22219012.

The previous prime is 22218997. The next prime is 22219027. The reversal of 22219013 is 31091222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15984004 + 6235009 = 3998^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 22219013 - 2⁴ = 22218997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22219063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11109506 + 11109507.

It is an arithmetic number, because the mean of its divisors is an integer number (11109507).

Almost surely, 2^22219013 is an apocalyptic number.

It is an amenable number.

22219013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22219013 is an equidigital number, since it uses as much as digits as its factorization.

22219013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22219013 is about 4713.7048062007. The cubic root of 22219013 is about 281.1306873014.

The spelling of 22219013 in words is "twenty-two million, two hundred nineteen thousand, thirteen".