1121352331 has 4 divisors (see below), whose sum is σ = 1223293464. Its totient is φ = 1019411200.

The previous prime is 1121352329. The next prime is 1121352359. The reversal of 1121352331 is 1332531211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1332531211 = 11 ⋅121139201.

It is a cyclic number.

It is not a de Polignac number, because 1121352331 - 2¹ = 1121352329 is a prime.

It is a super-2 number, since 2×1121352331² = 2514862100478267122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121352391) 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, 50970550 + ... + 50970571.

It is an arithmetic number, because the mean of its divisors is an integer number (305823366).

Almost surely, 2^1121352331 is an apocalyptic number.

1121352331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121352331 is a deficient number, since it is larger than the sum of its proper divisors (101941133).

1121352331 is a wasteful number, since it uses less digits than its factorization.

1121352331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101941132.

The product of its digits is 540, while the sum is 22.

The square root of 1121352331 is about 33486.5992749338. The cubic root of 1121352331 is about 1038.9166267057.

Adding to 1121352331 its reverse (1332531211), we get a palindrome (2453883542).

The spelling of 1121352331 in words is "one billion, one hundred twenty-one million, three hundred fifty-two thousand, three hundred thirty-one".