110122100000021 has 2 divisors, whose sum is σ = 110122100000022. Its totient is φ = 110122100000020.

The previous prime is 110122099999963. The next prime is 110122100000023. The reversal of 110122100000021 is 120000001221011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74401216876996 + 35720883123025 = 8625614^2 + 5976695^2 .

It is an emirp because it is prime and its reverse (120000001221011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110122100000021 - 2¹⁰ = 110122099998997 is a prime.

Together with 110122100000023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 110122099999948 and 110122100000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110122100000023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55061050000010 + 55061050000011.

It is an arithmetic number, because the mean of its divisors is an integer number (55061050000011).

Almost surely, 2^{110122100000021} is an apocalyptic number.

It is an amenable number.

110122100000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110122100000021 is an equidigital number, since it uses as much as digits as its factorization.

110122100000021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110122100000021 its reverse (120000001221011), we get a palindrome (230122101221032).

The spelling of 110122100000021 in words is "one hundred ten trillion, one hundred twenty-two billion, one hundred million, twenty-one", and thus it is an aban number.