1121340321 has 16 divisors (see below), whose sum is σ = 1733473920. Its totient is φ = 715057200.

The previous prime is 1121340313. The next prime is 1121340323. The reversal of 1121340321 is 1230431211.

1121340321 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 340 + 321 = 666.

It is not a de Polignac number, because 1121340321 - 2³ = 1121340313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121340294 and 1121340303.

It is not an unprimeable number, because it can be changed into a prime (1121340323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902230 + ... + 903471.

It is an arithmetic number, because the mean of its divisors is an integer number (108342120).

Almost surely, 2^1121340321 is an apocalyptic number.

It is an amenable number.

1121340321 is a deficient number, since it is larger than the sum of its proper divisors (612133599).

1121340321 is a wasteful number, since it uses less digits than its factorization.

1121340321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805733 (or 1805727 counting only the distinct ones).

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

The square root of 1121340321 is about 33486.4199489883. The cubic root of 1121340321 is about 1038.9129176624.

Adding to 1121340321 its reverse (1230431211), we get a palindrome (2351771532).

The spelling of 1121340321 in words is "one billion, one hundred twenty-one million, three hundred forty thousand, three hundred twenty-one".