11211047 has 2 divisors, whose sum is σ = 11211048. Its totient is φ = 11211046.

The previous prime is 11211029. The next prime is 11211061. The reversal of 11211047 is 74011211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11211047 - 2²² = 7016743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605523 + 5605524.

It is an arithmetic number, because the mean of its divisors is an integer number (5605524).

Almost surely, 2^11211047 is an apocalyptic number.

11211047 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211047 is an equidigital number, since it uses as much as digits as its factorization.

11211047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 11211047 is about 3348.2901606641. The cubic root of 11211047 is about 223.8113247011.

Adding to 11211047 its reverse (74011211), we get a palindrome (85222258).

The spelling of 11211047 in words is "eleven million, two hundred eleven thousand, forty-seven".