111023322131021 has 2 divisors, whose sum is σ = 111023322131022. Its totient is φ = 111023322131020.

The previous prime is 111023322131017. The next prime is 111023322131027. The reversal of 111023322131021 is 120131223320111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110705350198921 + 317971932100 = 10521661^2 + 563890^2 .

It is an emirp because it is prime and its reverse (120131223320111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111023322131021 - 2² = 111023322131017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111023322131027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511661065510 + 55511661065511.

It is an arithmetic number, because the mean of its divisors is an integer number (55511661065511).

Almost surely, 2^{111023322131021} is an apocalyptic number.

It is an amenable number.

111023322131021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111023322131021 is an equidigital number, since it uses as much as digits as its factorization.

111023322131021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 111023322131021 its reverse (120131223320111), we get a palindrome (231154545451132).

The spelling of 111023322131021 in words is "one hundred eleven trillion, twenty-three billion, three hundred twenty-two million, one hundred thirty-one thousand, twenty-one".