11021021129 has 2 divisors, whose sum is σ = 11021021130. Its totient is φ = 11021021128.

The previous prime is 11021021083. The next prime is 11021021147. The reversal of 11021021129 is 92112012011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10863267529 + 157753600 = 104227^2 + 12560^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021021129 - 2³² = 6726053833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11021021129.

It is not a weakly prime, because it can be changed into another prime (11021021149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510510564 + 5510510565.

It is an arithmetic number, because the mean of its divisors is an integer number (5510510565).

Almost surely, 2^11021021129 is an apocalyptic number.

It is an amenable number.

11021021129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021021129 is an equidigital number, since it uses as much as digits as its factorization.

11021021129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11021021129 in words is "eleven billion, twenty-one million, twenty-one thousand, one hundred twenty-nine".