1011215 has 4 divisors (see below), whose sum is σ = 1213464. Its totient is φ = 808968.

The previous prime is 1011191. The next prime is 1011217. The reversal of 1011215 is 5121101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5121101 = 1913 ⋅2677.

It is a cyclic number.

It is not a de Polignac number, because 1011215 - 2¹² = 1007119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011196 and 1011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011217) 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 in 3 ways as a sum of consecutive naturals, for example, 101117 + ... + 101126.

It is an arithmetic number, because the mean of its divisors is an integer number (303366).

2^1011215 is an apocalyptic number.

1011215 is a deficient number, since it is larger than the sum of its proper divisors (202249).

1011215 is an equidigital number, since it uses as much as digits as its factorization.

1011215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202248.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1011215 is about 1005.5918655200. The cubic root of 1011215 is about 100.3724444624.

Adding to 1011215 its reverse (5121101), we get a palindrome (6132316).

The spelling of 1011215 in words is "one million, eleven thousand, two hundred fifteen".