11233011333221 has 4 divisors (see below), whose sum is σ = 11233056966444. Its totient is φ = 11232965700000.

The previous prime is 11233011333209. The next prime is 11233011333239. The reversal of 11233011333221 is 12233311033211.

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 5743427937025 + 5489583396196 = 2396545^2 + 2342986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11233011333221 is a prime.

It is a super-2 number, since 2×11233011333221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233011333241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22445360 + ... + 22940361.

It is an arithmetic number, because the mean of its divisors is an integer number (2808264241611).

Almost surely, 2^{11233011333221} is an apocalyptic number.

It is an amenable number.

11233011333221 is a deficient number, since it is larger than the sum of its proper divisors (45633223).

11233011333221 is an equidigital number, since it uses as much as digits as its factorization.

11233011333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45633222.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 11233011333221 its reverse (12233311033211), we get a palindrome (23466322366432).

The spelling of 11233011333221 in words is "eleven trillion, two hundred thirty-three billion, eleven million, three hundred thirty-three thousand, two hundred twenty-one".