1200215 has 4 divisors (see below), whose sum is σ = 1440264. Its totient is φ = 960168.

The previous prime is 1200191. The next prime is 1200233. The reversal of 1200215 is 5120021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5120021 = 83 ⋅61687.

It is a cyclic number.

It is not a de Polignac number, because 1200215 - 2¹² = 1196119 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1200196 and 1200205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120017 + ... + 120026.

It is an arithmetic number, because the mean of its divisors is an integer number (360066).

2^1200215 is an apocalyptic number.

1200215 is a deficient number, since it is larger than the sum of its proper divisors (240049).

1200215 is an equidigital number, since it uses as much as digits as its factorization.

1200215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240048.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1200215 is about 1095.5432442400. The cubic root of 1200215 is about 106.2722029724.

Adding to 1200215 its reverse (5120021), we get a palindrome (6320236).

The spelling of 1200215 in words is "one million, two hundred thousand, two hundred fifteen".