1022215 has 4 divisors (see below), whose sum is σ = 1226664. Its totient is φ = 817768.

The previous prime is 1022209. The next prime is 1022237. The reversal of 1022215 is 5122201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1022215 - 2⁵ = 1022183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022195 and 1022204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102217 + ... + 102226.

It is an arithmetic number, because the mean of its divisors is an integer number (306666).

2^1022215 is an apocalyptic number.

1022215 is a deficient number, since it is larger than the sum of its proper divisors (204449).

1022215 is an equidigital number, since it uses as much as digits as its factorization.

1022215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204448.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1022215 is about 1011.0464875563. The cubic root of 1022215 is about 100.7350832856.

Adding to 1022215 its reverse (5122201), we get a palindrome (6144416).

The spelling of 1022215 in words is "one million, twenty-two thousand, two hundred fifteen".