1143012021 has 8 divisors (see below), whose sum is σ = 1531675200. Its totient is φ = 758178432.

The previous prime is 1143012011. The next prime is 1143012047. The reversal of 1143012021 is 1202103411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1143012021 - 2²² = 1138817717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143012011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956700 + ... + 957893.

It is an arithmetic number, because the mean of its divisors is an integer number (191459400).

Almost surely, 2^1143012021 is an apocalyptic number.

It is an amenable number.

1143012021 is a deficient number, since it is larger than the sum of its proper divisors (388663179).

1143012021 is a wasteful number, since it uses less digits than its factorization.

1143012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914795.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1143012021 is about 33808.4607901632. The cubic root of 1143012021 is about 1045.5631438888.

Adding to 1143012021 its reverse (1202103411), we get a palindrome (2345115432).

The spelling of 1143012021 in words is "one billion, one hundred forty-three million, twelve thousand, twenty-one".