2001010012111 has 4 divisors (see below), whose sum is σ = 2182920013224. Its totient is φ = 1819100011000.

The previous prime is 2001010012087. The next prime is 2001010012207. The reversal of 2001010012111 is 1112100101002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001010012111 - 2¹⁵ = 2001009979343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001010012411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90955000540 + ... + 90955000561.

It is an arithmetic number, because the mean of its divisors is an integer number (545730003306).

Almost surely, 2^{2001010012111} is an apocalyptic number.

2001010012111 is a deficient number, since it is larger than the sum of its proper divisors (181910001113).

2001010012111 is a wasteful number, since it uses less digits than its factorization.

2001010012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181910001112.

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

Adding to 2001010012111 its reverse (1112100101002), we get a palindrome (3113110113113).

The spelling of 2001010012111 in words is "two trillion, one billion, ten million, twelve thousand, one hundred eleven".