11233223131021 has 2 divisors, whose sum is σ = 11233223131022. Its totient is φ = 11233223131020.

The previous prime is 11233223130971. The next prime is 11233223131033. The reversal of 11233223131021 is 12013132233211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10782094632100 + 451128498921 = 3283610^2 + 671661^2 .

It is an emirp because it is prime and its reverse (12013132233211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11233223131021 - 2³³ = 11224633196429 is a prime.

It is a super-2 number, since 2×11233223131021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11233223131061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616611565510 + 5616611565511.

It is an arithmetic number, because the mean of its divisors is an integer number (5616611565511).

Almost surely, 2^{11233223131021} is an apocalyptic number.

It is an amenable number.

11233223131021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11233223131021 is an equidigital number, since it uses as much as digits as its factorization.

11233223131021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 11233223131021 its reverse (12013132233211), we get a palindrome (23246355364232).

The spelling of 11233223131021 in words is "eleven trillion, two hundred thirty-three billion, two hundred twenty-three million, one hundred thirty-one thousand, twenty-one".