1222671 has 8 divisors (see below), whose sum is σ = 1682944. Its totient is φ = 788760.

The previous prime is 1222667. The next prime is 1222679. The reversal of 1222671 is 1762221.

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

It is not a de Polignac number, because 1222671 - 2² = 1222667 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 (1222679) 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, 6481 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (210368).

2^1222671 is an apocalyptic number.

1222671 is a deficient number, since it is larger than the sum of its proper divisors (460273).

1222671 is a wasteful number, since it uses less digits than its factorization.

1222671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13181.

The product of its digits is 336, while the sum is 21.

The square root of 1222671 is about 1105.7445455439. The cubic root of 1222671 is about 106.9308954906.

Adding to 1222671 its reverse (1762221), we get a palindrome (2984892).

The spelling of 1222671 in words is "one million, two hundred twenty-two thousand, six hundred seventy-one".