1112123020321 has 4 divisors (see below), whose sum is σ = 1112125129492. Its totient is φ = 1112120911152.

The previous prime is 1112123020291. The next prime is 1112123020339. The reversal of 1112123020321 is 1230203212111.

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 867161376225 + 244961644096 = 931215^2 + 494936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112123020321 - 2¹⁷ = 1112122889249 is a prime.

It is a super-2 number, since 2×1112123020321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112123020391) 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, 519571 + ... + 1579303.

It is an arithmetic number, because the mean of its divisors is an integer number (278031282373).

Almost surely, 2^{1112123020321} is an apocalyptic number.

It is an amenable number.

1112123020321 is a deficient number, since it is larger than the sum of its proper divisors (2109171).

1112123020321 is a wasteful number, since it uses less digits than its factorization.

1112123020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109170.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1112123020321 its reverse (1230203212111), we get a palindrome (2342326232432).

The spelling of 1112123020321 in words is "one trillion, one hundred twelve billion, one hundred twenty-three million, twenty thousand, three hundred twenty-one".