110110010921 has 2 divisors, whose sum is σ = 110110010922. Its totient is φ = 110110010920.

The previous prime is 110110010903. The next prime is 110110011023. The reversal of 110110010921 is 129010011011.

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., 80422720921 + 29687290000 = 283589^2 + 172300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110110010921 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 110110010921.

It is not a weakly prime, because it can be changed into another prime (110100010921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055005460 + 55055005461.

It is an arithmetic number, because the mean of its divisors is an integer number (55055005461).

Almost surely, 2^110110010921 is an apocalyptic number.

It is an amenable number.

110110010921 is a deficient number, since it is larger than the sum of its proper divisors (1).

110110010921 is an equidigital number, since it uses as much as digits as its factorization.

110110010921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 110110010921 its reverse (129010011011), we get a palindrome (239120021932).

The spelling of 110110010921 in words is "one hundred ten billion, one hundred ten million, ten thousand, nine hundred twenty-one".