11210989 has 2 divisors, whose sum is σ = 11210990. Its totient is φ = 11210988.

The previous prime is 11210987. The next prime is 11210993. The reversal of 11210989 is 98901211.

11210989 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11168964 + 42025 = 3342^2 + 205^2 .

It is an emirp because it is prime and its reverse (98901211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11210989 - 2¹ = 11210987 is a prime.

Together with 11210987, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11210989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11210981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605494 + 5605495.

It is an arithmetic number, because the mean of its divisors is an integer number (5605495).

Almost surely, 2^11210989 is an apocalyptic number.

It is an amenable number.

11210989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11210989 is an equidigital number, since it uses as much as digits as its factorization.

11210989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 11210989 is about 3348.2814995158. The cubic root of 11210989 is about 223.8109387402.

The spelling of 11210989 in words is "eleven million, two hundred ten thousand, nine hundred eighty-nine".