21000201012001 has 8 divisors (see below), whose sum is σ = 21038202557504. Its totient is φ = 20962233114480.

The previous prime is 21000201011971. The next prime is 21000201012013. The reversal of 21000201012001 is 10021010200012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21000201012001 - 2¹⁹ = 21000200487713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000201012041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7162470 + ... + 9659263.

It is an arithmetic number, because the mean of its divisors is an integer number (2629775319688).

Almost surely, 2^{21000201012001} is an apocalyptic number.

It is an amenable number.

21000201012001 is a deficient number, since it is larger than the sum of its proper divisors (38001545503).

21000201012001 is a wasteful number, since it uses less digits than its factorization.

21000201012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16823991.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21000201012001 its reverse (10021010200012), we get a palindrome (31021211212013).

The spelling of 21000201012001 in words is "twenty-one trillion, two hundred one million, twelve thousand, one".