1143351121 has 16 divisors (see below), whose sum is σ = 1283846400. Its totient is φ = 1009382400.

The previous prime is 1143351119. The next prime is 1143351149. The reversal of 1143351121 is 1211533411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1143351121 - 2¹ = 1143351119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143351092 and 1143351101.

It is not an unprimeable number, because it can be changed into a prime (1143351421) 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, 42225 + ... + 63793.

It is an arithmetic number, because the mean of its divisors is an integer number (80240400).

Almost surely, 2^1143351121 is an apocalyptic number.

1143351121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1143351121 is a deficient number, since it is larger than the sum of its proper divisors (140495279).

1143351121 is a wasteful number, since it uses less digits than its factorization.

1143351121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21720.

The product of its digits is 360, while the sum is 22.

The square root of 1143351121 is about 33813.4754350984. The cubic root of 1143351121 is about 1045.6665302049. Note that the first 3 decimals are identical.

Adding to 1143351121 its reverse (1211533411), we get a palindrome (2354884532).

The spelling of 1143351121 in words is "one billion, one hundred forty-three million, three hundred fifty-one thousand, one hundred twenty-one".