1121422231 has 4 divisors (see below), whose sum is σ = 1139806264. Its totient is φ = 1103038200.

The previous prime is 1121422207. The next prime is 1121422249. The reversal of 1121422231 is 1322241211.

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 1121422231 - 2⁷ = 1121422103 is a prime.

It is a super-2 number, since 2×1121422231² = 2515175640362034722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121422199 and 1121422208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121422031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9191925 + ... + 9192046.

It is an arithmetic number, because the mean of its divisors is an integer number (284951566).

Almost surely, 2^1121422231 is an apocalyptic number.

1121422231 is a deficient number, since it is larger than the sum of its proper divisors (18384033).

1121422231 is an equidigital number, since it uses as much as digits as its factorization.

1121422231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18384032.

The product of its digits is 192, while the sum is 19.

The square root of 1121422231 is about 33487.6429597546. The cubic root of 1121422231 is about 1038.9382133683.

Adding to 1121422231 its reverse (1322241211), we get a palindrome (2443663442).

The spelling of 1121422231 in words is "one billion, one hundred twenty-one million, four hundred twenty-two thousand, two hundred thirty-one".