1003231212221 has 8 divisors (see below), whose sum is σ = 1146595860480. Its totient is φ = 859878039888.

The previous prime is 1003231212167. The next prime is 1003231212229. The reversal of 1003231212221 is 1222121323001.

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

It is not a de Polignac number, because 1003231212221 - 2¹⁰ = 1003231211197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1003231212193 and 1003231212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003231212229) 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, 2680826 + ... + 3032043.

It is an arithmetic number, because the mean of its divisors is an integer number (143324482560).

Almost surely, 2^{1003231212221} is an apocalyptic number.

It is an amenable number.

1003231212221 is a deficient number, since it is larger than the sum of its proper divisors (143364648259).

1003231212221 is an equidigital number, since it uses as much as digits as its factorization.

1003231212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737963.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1003231212221 its reverse (1222121323001), we get a palindrome (2225352535222).

The spelling of 1003231212221 in words is "one trillion, three billion, two hundred thirty-one million, two hundred twelve thousand, two hundred twenty-one".