11021129989 has 2 divisors, whose sum is σ = 11021129990. Its totient is φ = 11021129988.

The previous prime is 11021129983. The next prime is 11021130053. The reversal of 11021129989 is 98992112011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5832376900 + 5188753089 = 76370^2 + 72033^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021129989 - 2⁵ = 11021129957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021129983) 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, 5510564994 + 5510564995.

It is an arithmetic number, because the mean of its divisors is an integer number (5510564995).

Almost surely, 2^11021129989 is an apocalyptic number.

It is an amenable number.

11021129989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021129989 is an equidigital number, since it uses as much as digits as its factorization.

11021129989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 43.

The spelling of 11021129989 in words is "eleven billion, twenty-one million, one hundred twenty-nine thousand, nine hundred eighty-nine".