1006043221 has 8 divisors (see below), whose sum is σ = 1067454720. Its totient is φ = 944879808.

The previous prime is 1006043201. The next prime is 1006043243. The reversal of 1006043221 is 1223406001.

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

It is a cyclic number.

It is not a de Polignac number, because 1006043221 - 2²³ = 997654613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006043201) 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, 53631 + ... + 69916.

It is an arithmetic number, because the mean of its divisors is an integer number (133431840).

Almost surely, 2^1006043221 is an apocalyptic number.

It is an amenable number.

1006043221 is a deficient number, since it is larger than the sum of its proper divisors (61411499).

1006043221 is a wasteful number, since it uses less digits than its factorization.

1006043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124043.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1006043221 is about 31718.1843900309. The cubic root of 1006043221 is about 1002.0103627333.

Adding to 1006043221 its reverse (1223406001), we get a palindrome (2229449222).

The spelling of 1006043221 in words is "one billion, six million, forty-three thousand, two hundred twenty-one".