1110123211321 has 4 divisors (see below), whose sum is σ = 1110125318692. Its totient is φ = 1110121103952.

The previous prime is 1110123211319. The next prime is 1110123211343. The reversal of 1110123211321 is 1231123210111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 305853241600 + 804269969721 = 553040^2 + 896811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110123211321 - 2¹ = 1110123211319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110123611321) 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, 509815 + ... + 1574851.

It is an arithmetic number, because the mean of its divisors is an integer number (277531329673).

Almost surely, 2^{1110123211321} is an apocalyptic number.

It is an amenable number.

1110123211321 is a deficient number, since it is larger than the sum of its proper divisors (2107371).

1110123211321 is a wasteful number, since it uses less digits than its factorization.

1110123211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107370.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1110123211321 its reverse (1231123210111), we get a palindrome (2341246421432).

The spelling of 1110123211321 in words is "one trillion, one hundred ten billion, one hundred twenty-three million, two hundred eleven thousand, three hundred twenty-one".