1121232231 has 24 divisors (see below), whose sum is σ = 1853504640. Its totient is φ = 639810576.

The previous prime is 1121232187. The next prime is 1121232239. The reversal of 1121232231 is 1322321211.

It is not a de Polignac number, because 1121232231 - 2¹⁹ = 1120707943 is a prime.

It is a super-2 number, since 2×1121232231² = 2514323431666474722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121232239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34516 + ... + 58598.

It is an arithmetic number, because the mean of its divisors is an integer number (77229360).

Almost surely, 2^1121232231 is an apocalyptic number.

1121232231 is a deficient number, since it is larger than the sum of its proper divisors (732272409).

1121232231 is a wasteful number, since it uses less digits than its factorization.

1121232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24835 (or 24832 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1121232231 is about 33484.8059722615. The cubic root of 1121232231 is about 1038.8795350804.

Adding to 1121232231 its reverse (1322321211), we get a palindrome (2443553442).

The spelling of 1121232231 in words is "one billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred thirty-one".