1122321143 has 4 divisors (see below), whose sum is σ = 1122793320. Its totient is φ = 1121848968.

The previous prime is 1122321119. The next prime is 1122321217. The reversal of 1122321143 is 3411232211.

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 1122321143 - 2⁸ = 1122320887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122321043) 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, 232505 + ... + 237282.

It is an arithmetic number, because the mean of its divisors is an integer number (280698330).

Almost surely, 2^1122321143 is an apocalyptic number.

1122321143 is a deficient number, since it is larger than the sum of its proper divisors (472177).

1122321143 is an equidigital number, since it uses as much as digits as its factorization.

1122321143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472176.

The product of its digits is 288, while the sum is 20.

The square root of 1122321143 is about 33501.0618189931. The cubic root of 1122321143 is about 1039.2157373245.

Adding to 1122321143 its reverse (3411232211), we get a palindrome (4533553354).

The spelling of 1122321143 in words is "one billion, one hundred twenty-two million, three hundred twenty-one thousand, one hundred forty-three".