110101011222221 has 2 divisors, whose sum is σ = 110101011222222. Its totient is φ = 110101011222220.

The previous prime is 110101011222161. The next prime is 110101011222239. The reversal of 110101011222221 is 122222110101011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90752106432100 + 19348904790121 = 9526390^2 + 4398739^2 .

It is a cyclic number.

It is not a de Polignac number, because 110101011222221 - 2⁶ = 110101011222157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110101011222221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110101011222721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55050505611110 + 55050505611111.

It is an arithmetic number, because the mean of its divisors is an integer number (55050505611111).

Almost surely, 2^{110101011222221} is an apocalyptic number.

It is an amenable number.

110101011222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110101011222221 is an equidigital number, since it uses as much as digits as its factorization.

110101011222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 110101011222221 its reverse (122222110101011), we get a palindrome (232323121323232).

The spelling of 110101011222221 in words is "one hundred ten trillion, one hundred one billion, eleven million, two hundred twenty-two thousand, two hundred twenty-one".