2001020012101 has 4 divisors (see below), whose sum is σ = 2182930922304. Its totient is φ = 1819109101900.

The previous prime is 2001020012099. The next prime is 2001020012107. The reversal of 2001020012101 is 1012100201002.

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 2001020012101 - 2¹ = 2001020012099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001020012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90955455085 + ... + 90955455106.

It is an arithmetic number, because the mean of its divisors is an integer number (545732730576).

Almost surely, 2^{2001020012101} is an apocalyptic number.

It is an amenable number.

2001020012101 is a deficient number, since it is larger than the sum of its proper divisors (181910910203).

2001020012101 is a wasteful number, since it uses less digits than its factorization.

2001020012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181910910202.

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

Adding to 2001020012101 its reverse (1012100201002), we get a palindrome (3013120213103).

The spelling of 2001020012101 in words is "two trillion, one billion, twenty million, twelve thousand, one hundred one".