1212271 has 4 divisors (see below), whose sum is σ = 1238112. Its totient is φ = 1186432.

The previous prime is 1212259. The next prime is 1212283. The reversal of 1212271 is 1722121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1722121 = 79 ⋅21799.

It is an interprime number because it is at equal distance from previous prime (1212259) and next prime (1212283).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212271 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 (1212221) 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, 12850 + ... + 12943.

It is an arithmetic number, because the mean of its divisors is an integer number (309528).

2^1212271 is an apocalyptic number.

1212271 is a deficient number, since it is larger than the sum of its proper divisors (25841).

1212271 is an equidigital number, since it uses as much as digits as its factorization.

1212271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25840.

The product of its digits is 56, while the sum is 16.

The square root of 1212271 is about 1101.0317888236. The cubic root of 1212271 is about 106.6268482019.

Adding to 1212271 its reverse (1722121), we get a palindrome (2934392).

The spelling of 1212271 in words is "one million, two hundred twelve thousand, two hundred seventy-one".