1021320203001 has 48 divisors (see below), whose sum is σ = 1591135902720. Its totient is φ = 581019791520.

The previous prime is 1021320202963. The next prime is 1021320203009. The reversal of 1021320203001 is 1003020231201.

It is not a de Polignac number, because 1021320203001 - 2¹⁴ = 1021320186617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021320203009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38343250 + ... + 38369876.

It is an arithmetic number, because the mean of its divisors is an integer number (33148664640).

Almost surely, 2^{1021320203001} is an apocalyptic number.

It is an amenable number.

1021320203001 is a deficient number, since it is larger than the sum of its proper divisors (569815699719).

1021320203001 is a wasteful number, since it uses less digits than its factorization.

1021320203001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27794 (or 27787 counting only the distinct ones).

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

Adding to 1021320203001 its reverse (1003020231201), we get a palindrome (2024340434202).

The spelling of 1021320203001 in words is "one trillion, twenty-one billion, three hundred twenty million, two hundred three thousand, one".