1121200023 has 4 divisors (see below), whose sum is σ = 1494933368. Its totient is φ = 747466680.

The previous prime is 1121200009. The next prime is 1121200027. The reversal of 1121200023 is 3200021211.

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

It is not a de Polignac number, because 1121200023 - 2⁴ = 1121200007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121199981 and 1121200008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121200027) 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, 186866668 + ... + 186866673.

It is an arithmetic number, because the mean of its divisors is an integer number (373733342).

Almost surely, 2^1121200023 is an apocalyptic number.

1121200023 is a deficient number, since it is larger than the sum of its proper divisors (373733345).

1121200023 is an equidigital number, since it uses as much as digits as its factorization.

1121200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373733344.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1121200023 is about 33484.3250342604. The cubic root of 1121200023 is about 1038.8695875270.

Adding to 1121200023 its reverse (3200021211), we get a palindrome (4321221234).

The spelling of 1121200023 in words is "one billion, one hundred twenty-one million, two hundred thousand, twenty-three".