1002031031221 has 8 divisors (see below), whose sum is σ = 1093176378144. Its totient is φ = 910894287120.

The previous prime is 1002031031201. The next prime is 1002031031227. The reversal of 1002031031221 is 1221301302001.

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 1002031031221 - 2⁹ = 1002031030709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002031031195 and 1002031031204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002031031227) 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, 1905946 + ... + 2374171.

It is an arithmetic number, because the mean of its divisors is an integer number (136647047268).

Almost surely, 2^{1002031031221} is an apocalyptic number.

1002031031221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002031031221 is a deficient number, since it is larger than the sum of its proper divisors (91145346923).

1002031031221 is a wasteful number, since it uses less digits than its factorization.

1002031031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301411.

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

Adding to 1002031031221 its reverse (1221301302001), we get a palindrome (2223332333222).

The spelling of 1002031031221 in words is "one trillion, two billion, thirty-one million, thirty-one thousand, two hundred twenty-one".