1271213 has 2 divisors, whose sum is σ = 1271214. Its totient is φ = 1271212.

The previous prime is 1271203. The next prime is 1271227. The reversal of 1271213 is 3121721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170724 + 100489 = 1082^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 1271213 - 2⁴ = 1271197 is a prime.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 1271191 and 1271200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635606 + 635607.

It is an arithmetic number, because the mean of its divisors is an integer number (635607).

2^1271213 is an apocalyptic number.

It is an amenable number.

1271213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271213 is an equidigital number, since it uses as much as digits as its factorization.

1271213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84, while the sum is 17.

The square root of 1271213 is about 1127.4808202360. The cubic root of 1271213 is about 108.3276799154.

Adding to 1271213 its reverse (3121721), we get a palindrome (4392934).

The spelling of 1271213 in words is "one million, two hundred seventy-one thousand, two hundred thirteen".