1222571 has 4 divisors (see below), whose sum is σ = 1397232. Its totient is φ = 1047912.

The previous prime is 1222567. The next prime is 1222583. The reversal of 1222571 is 1752221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222571 - 2² = 1222567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87320 + ... + 87333.

It is an arithmetic number, because the mean of its divisors is an integer number (349308).

2^1222571 is an apocalyptic number.

1222571 is a deficient number, since it is larger than the sum of its proper divisors (174661).

1222571 is an equidigital number, since it uses as much as digits as its factorization.

1222571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174660.

The product of its digits is 280, while the sum is 20.

The square root of 1222571 is about 1105.6993262185. The cubic root of 1222571 is about 106.9279801844.

Adding to 1222571 its reverse (1752221), we get a palindrome (2974792).

The spelling of 1222571 in words is "one million, two hundred twenty-two thousand, five hundred seventy-one".