11221021331 has 8 divisors (see below), whose sum is σ = 12094074720. Its totient is φ = 10349381952.

The previous prime is 11221021319. The next prime is 11221021337. The reversal of 11221021331 is 13312012211.

11221021331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11221021331 - 2²⁶ = 11153912467 is a prime.

It is a super-2 number, since 2×11221021331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11221021337) 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 7 ways as a sum of consecutive naturals, for example, 336986 + ... + 368783.

It is an arithmetic number, because the mean of its divisors is an integer number (1511759340).

Almost surely, 2^11221021331 is an apocalyptic number.

11221021331 is a deficient number, since it is larger than the sum of its proper divisors (873053389).

11221021331 is a wasteful number, since it uses less digits than its factorization.

11221021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707005.

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

Adding to 11221021331 its reverse (13312012211), we get a palindrome (24533033542).

The spelling of 11221021331 in words is "eleven billion, two hundred twenty-one million, twenty-one thousand, three hundred thirty-one".