1121321100023 has 4 divisors (see below), whose sum is σ = 1121680616160. Its totient is φ = 1120961583888.

The previous prime is 1121321099971. The next prime is 1121321100047. The reversal of 1121321100023 is 3200011231211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121321100023 - 2¹⁶ = 1121321034487 is a prime.

It is a super-2 number, since 2×1121321100023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121321099974 and 1121321100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121326100023) 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, 179753390 + ... + 179759627.

It is an arithmetic number, because the mean of its divisors is an integer number (280420154040).

Almost surely, 2^{1121321100023} is an apocalyptic number.

1121321100023 is a deficient number, since it is larger than the sum of its proper divisors (359516137).

1121321100023 is an equidigital number, since it uses as much as digits as its factorization.

1121321100023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359516136.

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

Adding to 1121321100023 its reverse (3200011231211), we get a palindrome (4321332331234).

The spelling of 1121321100023 in words is "one trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred thousand, twenty-three".