1220199 has 8 divisors (see below), whose sum is σ = 1712640. Its totient is φ = 770616.

The previous prime is 1220171. The next prime is 1220203. The reversal of 1220199 is 9910221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220199 - 2⁷ = 1220071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10647 + ... + 10760.

It is an arithmetic number, because the mean of its divisors is an integer number (214080).

2^1220199 is an apocalyptic number.

1220199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1220199 is a deficient number, since it is larger than the sum of its proper divisors (492441).

1220199 is a wasteful number, since it uses less digits than its factorization.

1220199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21429.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1220199 is about 1104.6261811129. The cubic root of 1220199 is about 106.8587824645.

The spelling of 1220199 in words is "one million, two hundred twenty thousand, one hundred ninety-nine".