1129213 has 2 divisors, whose sum is σ = 1129214. Its totient is φ = 1129212.

The previous prime is 1129211. The next prime is 1129217. The reversal of 1129213 is 3129211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1127844 + 1369 = 1062^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129213 - 2¹ = 1129211 is a prime.

Together with 1129211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564606 + 564607.

It is an arithmetic number, because the mean of its divisors is an integer number (564607).

2^1129213 is an apocalyptic number.

It is an amenable number.

1129213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129213 is an equidigital number, since it uses as much as digits as its factorization.

1129213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 19.

The square root of 1129213 is about 1062.6443431365. The cubic root of 1129213 is about 104.1338574717.

The spelling of 1129213 in words is "one million, one hundred twenty-nine thousand, two hundred thirteen".