1221195 has 16 divisors (see below), whose sum is σ = 2069280. Its totient is φ = 612864.

The previous prime is 1221193. The next prime is 1221197. The reversal of 1221195 is 5911221.

It is an interprime number because it is at equal distance from previous prime (1221193) and next prime (1221197).

It is not a de Polignac number, because 1221195 - 2¹ = 1221193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2140 + ... + 2649.

It is an arithmetic number, because the mean of its divisors is an integer number (129330).

2^1221195 is an apocalyptic number.

1221195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1221195 is a deficient number, since it is larger than the sum of its proper divisors (848085).

1221195 is a wasteful number, since it uses less digits than its factorization.

1221195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814.

The product of its digits is 180, while the sum is 21.

The square root of 1221195 is about 1105.0769203997. The cubic root of 1221195 is about 106.8878494178.

The spelling of 1221195 in words is "one million, two hundred twenty-one thousand, one hundred ninety-five".