111322011310021 has 2 divisors, whose sum is σ = 111322011310022. Its totient is φ = 111322011310020.

The previous prime is 111322011310019. The next prime is 111322011310039. The reversal of 111322011310021 is 120013110223111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110818550107521 + 503461202500 = 10527039^2 + 709550^2 .

It is a cyclic number.

It is not a de Polignac number, because 111322011310021 - 2¹ = 111322011310019 is a prime.

Together with 111322011310019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111322011310621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55661005655010 + 55661005655011.

It is an arithmetic number, because the mean of its divisors is an integer number (55661005655011).

Almost surely, 2^{111322011310021} is an apocalyptic number.

It is an amenable number.

111322011310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111322011310021 is an equidigital number, since it uses as much as digits as its factorization.

111322011310021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 111322011310021 its reverse (120013110223111), we get a palindrome (231335121533132).

The spelling of 111322011310021 in words is "one hundred eleven trillion, three hundred twenty-two billion, eleven million, three hundred ten thousand, twenty-one".