11331011123221 has 4 divisors (see below), whose sum is σ = 11331036031744. Its totient is φ = 11330986214700.

The previous prime is 11331011123197. The next prime is 11331011123261. The reversal of 11331011123221 is 12232111013311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11331011123221 - 2⁷ = 11331011123093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331011123192 and 11331011123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331011123261) 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 3 ways as a sum of consecutive naturals, for example, 11758965 + ... + 12686026.

It is an arithmetic number, because the mean of its divisors is an integer number (2832759007936).

Almost surely, 2^{11331011123221} is an apocalyptic number.

It is an amenable number.

11331011123221 is a deficient number, since it is larger than the sum of its proper divisors (24908523).

11331011123221 is an equidigital number, since it uses as much as digits as its factorization.

11331011123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24908522.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 11331011123221 its reverse (12232111013311), we get a palindrome (23563122136532).

The spelling of 11331011123221 in words is "eleven trillion, three hundred thirty-one billion, eleven million, one hundred twenty-three thousand, two hundred twenty-one".