2021401320401 has 12 divisors (see below), whose sum is σ = 2134026720000. Its totient is φ = 1914440515128.

The previous prime is 2021401320383. The next prime is 2021401320409. The reversal of 2021401320401 is 1040231041202.

It is not a de Polignac number, because 2021401320401 - 2¹⁴ = 2021401304017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021401320409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379100 + ... + 2046098.

It is an arithmetic number, because the mean of its divisors is an integer number (177835560000).

Almost surely, 2^{2021401320401} is an apocalyptic number.

It is an amenable number.

2021401320401 is a deficient number, since it is larger than the sum of its proper divisors (112625399599).

2021401320401 is a wasteful number, since it uses less digits than its factorization.

2021401320401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670396 (or 1670377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2021401320401 its reverse (1040231041202), we get a palindrome (3061632361603).

The spelling of 2021401320401 in words is "two trillion, twenty-one billion, four hundred one million, three hundred twenty thousand, four hundred one".