110611620221 has 2 divisors, whose sum is σ = 110611620222. Its totient is φ = 110611620220.

The previous prime is 110611620187. The next prime is 110611620269. The reversal of 110611620221 is 122026116011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89514057721 + 21097562500 = 299189^2 + 145250^2 .

It is an emirp because it is prime and its reverse (122026116011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110611620221 - 2¹⁰ = 110611619197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110611620281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55305810110 + 55305810111.

It is an arithmetic number, because the mean of its divisors is an integer number (55305810111).

Almost surely, 2^110611620221 is an apocalyptic number.

It is an amenable number.

110611620221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110611620221 is an equidigital number, since it uses as much as digits as its factorization.

110611620221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 110611620221 its reverse (122026116011), we get a palindrome (232637736232).

The spelling of 110611620221 in words is "one hundred ten billion, six hundred eleven million, six hundred twenty thousand, two hundred twenty-one".