11213711 has 2 divisors, whose sum is σ = 11213712. Its totient is φ = 11213710.

The previous prime is 11213689. The next prime is 11213729. The reversal of 11213711 is 11731211.

It is a strong prime.

It is an emirp because it is prime and its reverse (11731211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11213711 - 2⁶ = 11213647 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11213711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11213771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606855 + 5606856.

It is an arithmetic number, because the mean of its divisors is an integer number (5606856).

Almost surely, 2^11213711 is an apocalyptic number.

11213711 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213711 is an equidigital number, since it uses as much as digits as its factorization.

11213711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 17.

The square root of 11213711 is about 3348.6879520194. The cubic root of 11213711 is about 223.8290508525.

Adding to 11213711 its reverse (11731211), we get a palindrome (22944922).

The spelling of 11213711 in words is "eleven million, two hundred thirteen thousand, seven hundred eleven".