11122133021 has 4 divisors (see below), whose sum is σ = 11127161052. Its totient is φ = 11117104992.

The previous prime is 11122132997. The next prime is 11122133081. The reversal of 11122133021 is 12033122111.

11122133021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10467336100 + 654796921 = 102310^2 + 25589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122133021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122133081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2510696 + ... + 2515121.

It is an arithmetic number, because the mean of its divisors is an integer number (2781790263).

Almost surely, 2^11122133021 is an apocalyptic number.

It is an amenable number.

11122133021 is a deficient number, since it is larger than the sum of its proper divisors (5028031).

11122133021 is an equidigital number, since it uses as much as digits as its factorization.

11122133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028030.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11122133021 its reverse (12033122111), we get a palindrome (23155255132).

The spelling of 11122133021 in words is "eleven billion, one hundred twenty-two million, one hundred thirty-three thousand, twenty-one".