11071215 has 16 divisors (see below), whose sum is σ = 19682400. Its totient is φ = 5904576.

The previous prime is 11071187. The next prime is 11071217. The reversal of 11071215 is 51217011.

It is a happy number.

11071215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11071215 - 2¹⁴ = 11054831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11071217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40870 + ... + 41139.

It is an arithmetic number, because the mean of its divisors is an integer number (1230150).

Almost surely, 2^11071215 is an apocalyptic number.

11071215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11071215 is a deficient number, since it is larger than the sum of its proper divisors (8611185).

11071215 is an equidigital number, since it uses as much as digits as its factorization.

11071215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82023 (or 82017 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 11071215 is about 3327.3435350141. The cubic root of 11071215 is about 222.8769186804.

Adding to 11071215 its reverse (51217011), we get a palindrome (62288226).

The spelling of 11071215 in words is "eleven million, seventy-one thousand, two hundred fifteen".