1003132001221 has 4 divisors (see below), whose sum is σ = 1146436572832. Its totient is φ = 859827429612.

The previous prime is 1003132001191. The next prime is 1003132001237. The reversal of 1003132001221 is 1221002313001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1003132001221 - 2⁵ = 1003132001189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003132001195 and 1003132001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003132001281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71652285795 + ... + 71652285808.

It is an arithmetic number, because the mean of its divisors is an integer number (286609143208).

Almost surely, 2^{1003132001221} is an apocalyptic number.

It is an amenable number.

1003132001221 is a deficient number, since it is larger than the sum of its proper divisors (143304571611).

1003132001221 is an equidigital number, since it uses as much as digits as its factorization.

1003132001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143304571610.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1003132001221 its reverse (1221002313001), we get a palindrome (2224134314222).

The spelling of 1003132001221 in words is "one trillion, three billion, one hundred thirty-two million, one thousand, two hundred twenty-one".