11321131022021 has 4 divisors (see below), whose sum is σ = 11916980023200. Its totient is φ = 10725282020844.

The previous prime is 11321131021997. The next prime is 11321131022023. The reversal of 11321131022021 is 12022013112311.

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 a de Polignac number, because none of the positive numbers 2^k-11321131022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321131021984 and 11321131022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321131022023) 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, 297924500561 + ... + 297924500598.

It is an arithmetic number, because the mean of its divisors is an integer number (2979245005800).

Almost surely, 2^{11321131022021} is an apocalyptic number.

It is an amenable number.

11321131022021 is a deficient number, since it is larger than the sum of its proper divisors (595849001179).

11321131022021 is an equidigital number, since it uses as much as digits as its factorization.

11321131022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595849001178.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11321131022021 its reverse (12022013112311), we get a palindrome (23343144134332).

The spelling of 11321131022021 in words is "eleven trillion, three hundred twenty-one billion, one hundred thirty-one million, twenty-two thousand, twenty-one".