2001400314021 has 6 divisors (see below), whose sum is σ = 2890911564710. Its totient is φ = 1334266876008.

The previous prime is 2001400313977. The next prime is 2001400314031. The reversal of 2001400314021 is 1204130041002.

2001400314021 is a `hidden beast` number, since 200 + 1 + 400 + 3 + 1 + 40 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1984632912900 + 16767401121 = 1408770^2 + 129489^2 .

It is not a de Polignac number, because 2001400314021 - 2¹⁰ = 2001400312997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001400313985 and 2001400314003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001400314031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111188906326 + ... + 111188906343.

Almost surely, 2^{2001400314021} is an apocalyptic number.

It is an amenable number.

2001400314021 is a deficient number, since it is larger than the sum of its proper divisors (889511250689).

2001400314021 is a wasteful number, since it uses less digits than its factorization.

2001400314021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222377812675 (or 222377812672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2001400314021 its reverse (1204130041002), we get a palindrome (3205530355023).

The spelling of 2001400314021 in words is "two trillion, one billion, four hundred million, three hundred fourteen thousand, twenty-one".