110023121321 has 4 divisors (see below), whose sum is σ = 116495069652. Its totient is φ = 103551172992.

The previous prime is 110023121303. The next prime is 110023121339. The reversal of 110023121321 is 123121320011.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (110023121303) and next prime (110023121339).

It can be written as a sum of positive squares in 2 ways, for example, as 98181328921 + 11841792400 = 313339^2 + 108820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110023121321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6471948313 = 110023121321 / (1 + 1 + 0 + 0 + 2 + 3 + 1 + 2 + 1 + 3 + 2 + 1).

It is a self number, because there is not a number n which added to its sum of digits gives 110023121321.

It is not an unprimeable number, because it can be changed into a prime (110023121521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3235974140 + ... + 3235974173.

It is an arithmetic number, because the mean of its divisors is an integer number (29123767413).

Almost surely, 2^110023121321 is an apocalyptic number.

It is an amenable number.

110023121321 is a deficient number, since it is larger than the sum of its proper divisors (6471948331).

110023121321 is an equidigital number, since it uses as much as digits as its factorization.

110023121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6471948330.

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

Adding to 110023121321 its reverse (123121320011), we get a palindrome (233144441332).

The spelling of 110023121321 in words is "one hundred ten billion, twenty-three million, one hundred twenty-one thousand, three hundred twenty-one".