1222971 has 4 divisors (see below), whose sum is σ = 1630632. Its totient is φ = 815312.

The previous prime is 1222967. The next prime is 1222993. The reversal of 1222971 is 1792221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1792221 = 3 ⋅597407.

It is a cyclic number.

It is not a de Polignac number, because 1222971 - 2² = 1222967 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1222931) 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, 203826 + ... + 203831.

It is an arithmetic number, because the mean of its divisors is an integer number (407658).

2^1222971 is an apocalyptic number.

1222971 is a deficient number, since it is larger than the sum of its proper divisors (407661).

1222971 is an equidigital number, since it uses as much as digits as its factorization.

1222971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407660.

The product of its digits is 504, while the sum is 24.

The square root of 1222971 is about 1105.8801924259. The cubic root of 1222971 is about 106.9396404556.

The spelling of 1222971 in words is "one million, two hundred twenty-two thousand, nine hundred seventy-one".