20111001012001 has 8 divisors (see below), whose sum is σ = 20310264062208. Its totient is φ = 19911740790000.

The previous prime is 20111001011963. The next prime is 20111001012071. The reversal of 20111001012001 is 10021010011102.

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 20111001012001 - 2⁹ = 20111001011489 is a prime.

It is a super-2 number, since 2×20111001012001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111001012071) 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, 15392016 + ... + 16647406.

It is an arithmetic number, because the mean of its divisors is an integer number (2538783007776).

Almost surely, 2^{20111001012001} is an apocalyptic number.

It is an amenable number.

20111001012001 is a deficient number, since it is larger than the sum of its proper divisors (199263050207).

20111001012001 is a wasteful number, since it uses less digits than its factorization.

20111001012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414103.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20111001012001 its reverse (10021010011102), we get a palindrome (30132011023103).

The spelling of 20111001012001 in words is "twenty trillion, one hundred eleven billion, one million, twelve thousand, one".