11010011021 has 16 divisors (see below), whose sum is σ = 11387271600. Its totient is φ = 10639968768.

The previous prime is 11010011009. The next prime is 11010011027. The reversal of 11010011021 is 12011001011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1982920900 + 9027090121 = 44530^2 + 95011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11010011021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010011027) 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 in 15 ways as a sum of consecutive naturals, for example, 1264535 + ... + 1273211.

It is an arithmetic number, because the mean of its divisors is an integer number (711704475).

Almost surely, 2^11010011021 is an apocalyptic number.

It is an amenable number.

11010011021 is a deficient number, since it is larger than the sum of its proper divisors (377260579).

11010011021 is an equidigital number, since it uses as much as digits as its factorization.

11010011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9088.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11010011021 its reverse (12011001011), we get a palindrome (23021012032).

It can be divided in two parts, 110100 and 11021, that added together give a palindrome (121121).

The spelling of 11010011021 in words is "eleven billion, ten million, eleven thousand, twenty-one".