11331321122021 has 2 divisors, whose sum is σ = 11331321122022. Its totient is φ = 11331321122020.

The previous prime is 11331321121963. The next prime is 11331321122039. The reversal of 11331321122021 is 12022112313311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7108830405121 + 4222490716900 = 2666239^2 + 2054870^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331321122021 - 2¹⁰ = 11331321120997 is a prime.

It is a super-2 number, since 2×11331321122021² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331321172021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665660561010 + 5665660561011.

It is an arithmetic number, because the mean of its divisors is an integer number (5665660561011).

Almost surely, 2^{11331321122021} is an apocalyptic number.

It is an amenable number.

11331321122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331321122021 is an equidigital number, since it uses as much as digits as its factorization.

11331321122021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11331321122021 its reverse (12022112313311), we get a palindrome (23353433435332).

The spelling of 11331321122021 in words is "eleven trillion, three hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-two thousand, twenty-one".