1003132221 has 32 divisors (see below), whose sum is σ = 1658243328. Its totient is φ = 525242880.

The previous prime is 1003132157. The next prime is 1003132223. The reversal of 1003132221 is 1222313001.

It is not a de Polignac number, because 1003132221 - 2⁶ = 1003132157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003132221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003132223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23991 + ... + 50811.

It is an arithmetic number, because the mean of its divisors is an integer number (51820104).

Almost surely, 2^1003132221 is an apocalyptic number.

It is an amenable number.

1003132221 is a deficient number, since it is larger than the sum of its proper divisors (655111107).

1003132221 is a wasteful number, since it uses less digits than its factorization.

1003132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26981.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1003132221 is about 31672.2626441497. The cubic root of 1003132221 is about 1001.0429854698.

Adding to 1003132221 its reverse (1222313001), we get a palindrome (2225445222).

The spelling of 1003132221 in words is "one billion, three million, one hundred thirty-two thousand, two hundred twenty-one".