1031203200021 has 8 divisors (see below), whose sum is σ = 1377692988000. Its totient is φ = 686091106032.

The previous prime is 1031203200019. The next prime is 1031203200029. The reversal of 1031203200021 is 1200023021301.

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

It is not a de Polignac number, because 1031203200021 - 2¹ = 1031203200019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031203200029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344421750 + ... + 344424743.

It is an arithmetic number, because the mean of its divisors is an integer number (172211623500).

Almost surely, 2^{1031203200021} is an apocalyptic number.

It is an amenable number.

1031203200021 is a deficient number, since it is larger than the sum of its proper divisors (346489787979).

1031203200021 is an equidigital number, since it uses as much as digits as its factorization.

1031203200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688846995.

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

Adding to 1031203200021 its reverse (1200023021301), we get a palindrome (2231226221322).

The spelling of 1031203200021 in words is "one trillion, thirty-one billion, two hundred three million, two hundred thousand, twenty-one".