1222199 has 4 divisors (see below), whose sum is σ = 1333320. Its totient is φ = 1111080.

The previous prime is 1222187. The next prime is 1222219. The reversal of 1222199 is 9912221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9912221 = 11 ⋅901111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222129) 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 3 ways as a sum of consecutive naturals, for example, 55544 + ... + 55565.

It is an arithmetic number, because the mean of its divisors is an integer number (333330).

2^1222199 is an apocalyptic number.

1222199 is a deficient number, since it is larger than the sum of its proper divisors (111121).

1222199 is a wasteful number, since it uses less digits than its factorization.

1222199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111120.

The product of its digits is 648, while the sum is 26.

The square root of 1222199 is about 1105.5310940901. The cubic root of 1222199 is about 106.9171338494.

It can be divided in two parts, 122 and 2199, that multiplied together give a triangular number (268278 = T₇₃₂).

The spelling of 1222199 in words is "one million, two hundred twenty-two thousand, one hundred ninety-nine".