110000111021 has 2 divisors, whose sum is σ = 110000111022. Its totient is φ = 110000111020.

The previous prime is 110000111009. The next prime is 110000111063. The reversal of 110000111021 is 120111000011.

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., 93872380996 + 16127730025 = 306386^2 + 126995^2 .

It is a cyclic number.

It is not a de Polignac number, because 110000111021 - 2³⁰ = 108926369197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110000311021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55000055510 + 55000055511.

It is an arithmetic number, because the mean of its divisors is an integer number (55000055511).

Almost surely, 2^110000111021 is an apocalyptic number.

It is an amenable number.

110000111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110000111021 is an equidigital number, since it uses as much as digits as its factorization.

110000111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 110000111021 its reverse (120111000011), we get a palindrome (230111111032).

The spelling of 110000111021 in words is "one hundred ten billion, one hundred eleven thousand, twenty-one".