1020321321001 has 16 divisors (see below), whose sum is σ = 1037859187968. Its totient is φ = 1002875328000.

The previous prime is 1020321320989. The next prime is 1020321321007. The reversal of 1020321321001 is 1001231230201.

It is a cyclic number.

It is not a de Polignac number, because 1020321321001 - 2³³ = 1011731386409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020321321007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38955756 + ... + 38981938.

It is an arithmetic number, because the mean of its divisors is an integer number (64866199248).

Almost surely, 2^{1020321321001} is an apocalyptic number.

It is an amenable number.

1020321321001 is a deficient number, since it is larger than the sum of its proper divisors (17537866967).

1020321321001 is a wasteful number, since it uses less digits than its factorization.

1020321321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27912.

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

Adding to 1020321321001 its reverse (1001231230201), we get a palindrome (2021552551202).

The spelling of 1020321321001 in words is "one trillion, twenty billion, three hundred twenty-one million, three hundred twenty-one thousand, one".