4021020320401 has 4 divisors (see below), whose sum is σ = 4595451794752. Its totient is φ = 3446588846052.

The previous prime is 4021020320389. The next prime is 4021020320423. The reversal of 4021020320401 is 1040230201204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4021020320401 - 2²¹ = 4021018223249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4021020320201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287215737165 + ... + 287215737178.

It is an arithmetic number, because the mean of its divisors is an integer number (1148862948688).

Almost surely, 2^{4021020320401} is an apocalyptic number.

It is an amenable number.

4021020320401 is a deficient number, since it is larger than the sum of its proper divisors (574431474351).

4021020320401 is an equidigital number, since it uses as much as digits as its factorization.

4021020320401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574431474350.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 4021020320401 its reverse (1040230201204), we get a palindrome (5061250521605).

The spelling of 4021020320401 in words is "four trillion, twenty-one billion, twenty million, three hundred twenty thousand, four hundred one".