11261215 has 32 divisors (see below), whose sum is σ = 16257024. Its totient is φ = 7326720.

The previous prime is 11261203. The next prime is 11261219. The reversal of 11261215 is 51216211.

It is not a de Polignac number, because 11261215 - 2⁹ = 11260703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11261192 and 11261201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11261219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105192 + ... + 105298.

It is an arithmetic number, because the mean of its divisors is an integer number (508032).

Almost surely, 2^11261215 is an apocalyptic number.

11261215 is a deficient number, since it is larger than the sum of its proper divisors (4995809).

11261215 is a wasteful number, since it uses less digits than its factorization.

11261215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 120, while the sum is 19.

The square root of 11261215 is about 3355.7733832904. The cubic root of 11261215 is about 224.1446703095.

Adding to 11261215 its reverse (51216211), we get a palindrome (62477426).

It can be divided in two parts, 11261 and 215, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 11261215 in words is "eleven million, two hundred sixty-one thousand, two hundred fifteen".