111032231021 has 2 divisors, whose sum is σ = 111032231022. Its totient is φ = 111032231020.

The previous prime is 111032230993. The next prime is 111032231029. The reversal of 111032231021 is 120132230111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110513029225 + 519201796 = 332435^2 + 22786^2 .

It is a cyclic number.

It is not a de Polignac number, because 111032231021 - 2²⁶ = 110965122157 is a prime.

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 (111032231029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55516115510 + 55516115511.

It is an arithmetic number, because the mean of its divisors is an integer number (55516115511).

Almost surely, 2^111032231021 is an apocalyptic number.

It is an amenable number.

111032231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111032231021 is an equidigital number, since it uses as much as digits as its factorization.

111032231021 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 17.

Adding to 111032231021 its reverse (120132230111), we get a palindrome (231164461132).

The spelling of 111032231021 in words is "one hundred eleven billion, thirty-two million, two hundred thirty-one thousand, twenty-one".