11129021 has 2 divisors, whose sum is σ = 11129022. Its totient is φ = 11129020.

The previous prime is 11129017. The next prime is 11129051. The reversal of 11129021 is 12092111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7761796 + 3367225 = 2786^2 + 1835^2 .

It is a cyclic number.

It is not a de Polignac number, because 11129021 - 2² = 11129017 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 (11129051) 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, 5564510 + 5564511.

It is an arithmetic number, because the mean of its divisors is an integer number (5564511).

Almost surely, 2^11129021 is an apocalyptic number.

It is an amenable number.

11129021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11129021 is an equidigital number, since it uses as much as digits as its factorization.

11129021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11129021 is about 3336.0187349594. The cubic root of 11129021 is about 223.2641470302.

The spelling of 11129021 in words is "eleven million, one hundred twenty-nine thousand, twenty-one".