22771013 has 2 divisors, whose sum is σ = 22771014. Its totient is φ = 22771012.

The previous prime is 22771009. The next prime is 22771027. The reversal of 22771013 is 31017722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17833729 + 4937284 = 4223^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 22771013 - 2² = 22771009 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22771013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22771043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11385506 + 11385507.

It is an arithmetic number, because the mean of its divisors is an integer number (11385507).

Almost surely, 2^22771013 is an apocalyptic number.

It is an amenable number.

22771013 is a deficient number, since it is larger than the sum of its proper divisors (1).

22771013 is an equidigital number, since it uses as much as digits as its factorization.

22771013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 22771013 is about 4771.8982596028. The cubic root of 22771013 is about 283.4397679327.

Adding to 22771013 its reverse (31017722), we get a palindrome (53788735).

The spelling of 22771013 in words is "twenty-two million, seven hundred seventy-one thousand, thirteen".