110123021321 has 2 divisors, whose sum is σ = 110123021322. Its totient is φ = 110123021320.

The previous prime is 110123021303. The next prime is 110123021353. The reversal of 110123021321 is 123120321011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63925537225 + 46197484096 = 252835^2 + 214936^2 .

It is a cyclic number.

It is not a de Polignac number, because 110123021321 - 2⁶ = 110123021257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110123021321.

It is not a weakly prime, because it can be changed into another prime (110123021521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55061510660 + 55061510661.

It is an arithmetic number, because the mean of its divisors is an integer number (55061510661).

Almost surely, 2^110123021321 is an apocalyptic number.

It is an amenable number.

110123021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

110123021321 is an equidigital number, since it uses as much as digits as its factorization.

110123021321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 110123021321 its reverse (123120321011), we get a palindrome (233243342332).

The spelling of 110123021321 in words is "one hundred ten billion, one hundred twenty-three million, twenty-one thousand, three hundred twenty-one".