110110000001021 has 2 divisors, whose sum is σ = 110110000001022. Its totient is φ = 110110000001020.

The previous prime is 110110000001009. The next prime is 110110000001083. The reversal of 110110000001021 is 120100000011011.

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., 67698502968100 + 42411497032921 = 8227910^2 + 6512411^2 .

It is an emirp because it is prime and its reverse (120100000011011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110110000001021 - 2¹⁰ = 110109999999997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110110000001621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055000000510 + 55055000000511.

It is an arithmetic number, because the mean of its divisors is an integer number (55055000000511).

Almost surely, 2^{110110000001021} is an apocalyptic number.

It is an amenable number.

110110000001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110110000001021 is an equidigital number, since it uses as much as digits as its factorization.

110110000001021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 110110000001021 its reverse (120100000011011), we get a palindrome (230210000012032).

The spelling of 110110000001021 in words is "one hundred ten trillion, one hundred ten billion, one thousand, twenty-one".