110222212221221 has 2 divisors, whose sum is σ = 110222212221222. Its totient is φ = 110222212221220.

The previous prime is 110222212221139. The next prime is 110222212221313. The reversal of 110222212221221 is 122122212222011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77895186930625 + 32327025290596 = 8825825^2 + 5685686^2 .

It is a cyclic number.

It is not a de Polignac number, because 110222212221221 - 2²⁶ = 110222145112357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110222212221521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55111106110610 + 55111106110611.

It is an arithmetic number, because the mean of its divisors is an integer number (55111106110611).

Almost surely, 2^{110222212221221} is an apocalyptic number.

It is an amenable number.

110222212221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110222212221221 is an equidigital number, since it uses as much as digits as its factorization.

110222212221221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 110222212221221 its reverse (122122212222011), we get a palindrome (232344424443232).

The spelling of 110222212221221 in words is "one hundred ten trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".