1321199 has 12 divisors (see below), whose sum is σ = 1484280. Its totient is φ = 1174800.

The previous prime is 1321193. The next prime is 1321213. The reversal of 1321199 is 9911231.

It is not a de Polignac number, because 1321199 - 2¹⁶ = 1255663 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321193) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7292 + ... + 7470.

It is an arithmetic number, because the mean of its divisors is an integer number (123690).

2^1321199 is an apocalyptic number.

1321199 is a deficient number, since it is larger than the sum of its proper divisors (163081).

1321199 is a wasteful number, since it uses less digits than its factorization.

1321199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 251 counting only the distinct ones).

The product of its digits is 486, while the sum is 26.

The square root of 1321199 is about 1149.4342086435. The cubic root of 1321199 is about 109.7293345482.

It can be divided in two parts, 132 and 1199, that added together give a palindrome (1331).

The spelling of 1321199 in words is "one million, three hundred twenty-one thousand, one hundred ninety-nine".