110002221222221 has 2 divisors, whose sum is σ = 110002221222222. Its totient is φ = 110002221222220.

The previous prime is 110002221222209. The next prime is 110002221222269. The reversal of 110002221222221 is 122222122200011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59616713246596 + 50385507975625 = 7721186^2 + 7098275^2 .

It is an emirp because it is prime and its reverse (122222122200011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110002221222221 - 2⁴² = 105604174711117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 110002221222193 and 110002221222202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110002221252221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55001110611110 + 55001110611111.

It is an arithmetic number, because the mean of its divisors is an integer number (55001110611111).

Almost surely, 2^{110002221222221} is an apocalyptic number.

It is an amenable number.

110002221222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110002221222221 is an equidigital number, since it uses as much as digits as its factorization.

110002221222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 110002221222221 its reverse (122222122200011), we get a palindrome (232224343422232).

The spelling of 110002221222221 in words is "one hundred ten trillion, two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".