11321221332131 has 4 divisors (see below), whose sum is σ = 11341118031000. Its totient is φ = 11301324633264.

The previous prime is 11321221332101. The next prime is 11321221332163. The reversal of 11321221332131 is 13123312212311.

11321221332131 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 is a cyclic number.

It is not a de Polignac number, because 11321221332131 - 2³⁴ = 11304041462947 is a prime.

It is a super-2 number, since 2×11321221332131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321221332131.

It is not an unprimeable number, because it can be changed into a prime (11321221332101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9948348581 + ... + 9948349718.

It is an arithmetic number, because the mean of its divisors is an integer number (2835279507750).

Almost surely, 2^{11321221332131} is an apocalyptic number.

11321221332131 is a deficient number, since it is larger than the sum of its proper divisors (19896698869).

11321221332131 is an equidigital number, since it uses as much as digits as its factorization.

11321221332131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19896698868.

The product of its digits is 1296, while the sum is 26.

Adding to 11321221332131 its reverse (13123312212311), we get a palindrome (24444533544442).

The spelling of 11321221332131 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-one million, three hundred thirty-two thousand, one hundred thirty-one".