1121342223 has 4 divisors (see below), whose sum is σ = 1495122968. Its totient is φ = 747561480.

The previous prime is 1121342221. The next prime is 1121342237. The reversal of 1121342223 is 3222431211.

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

It is not a de Polignac number, because 1121342223 - 2¹ = 1121342221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121342223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121342221) 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, 186890368 + ... + 186890373.

It is an arithmetic number, because the mean of its divisors is an integer number (373780742).

Almost surely, 2^1121342223 is an apocalyptic number.

1121342223 is a deficient number, since it is larger than the sum of its proper divisors (373780745).

1121342223 is an equidigital number, since it uses as much as digits as its factorization.

1121342223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373780744.

The product of its digits is 576, while the sum is 21.

The square root of 1121342223 is about 33486.4483485484. The cubic root of 1121342223 is about 1038.9135050580.

Adding to 1121342223 its reverse (3222431211), we get a palindrome (4343773434).

The spelling of 1121342223 in words is "one billion, one hundred twenty-one million, three hundred forty-two thousand, two hundred twenty-three".