11215279 has 2 divisors, whose sum is σ = 11215280. Its totient is φ = 11215278.

The previous prime is 11215271. The next prime is 11215289. The reversal of 11215279 is 97251211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11215279 - 2³ = 11215271 is a prime.

It is equal to p₇₃₉₈₀₁ and since 11215279 and 739801 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11215271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607639 + 5607640.

It is an arithmetic number, because the mean of its divisors is an integer number (5607640).

Almost surely, 2^11215279 is an apocalyptic number.

11215279 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215279 is an equidigital number, since it uses as much as digits as its factorization.

11215279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 28.

The square root of 11215279 is about 3348.9220653816. The cubic root of 11215279 is about 223.8394829505.

It can be divided in two parts, 1121 and 5279, that added together give a square (6400 = 80²).

The spelling of 11215279 in words is "eleven million, two hundred fifteen thousand, two hundred seventy-nine".