2001000920111 has 16 divisors (see below), whose sum is σ = 2016026428416. Its totient is φ = 1986018414336.

The previous prime is 2001000920101. The next prime is 2001000920123. The reversal of 2001000920111 is 1110290001002.

It is a cyclic number.

It is not a de Polignac number, because 2001000920111 - 2⁶ = 2001000920047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001000920111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001000920101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297189701 + ... + 297196433.

It is an arithmetic number, because the mean of its divisors is an integer number (126001651776).

Almost surely, 2^{2001000920111} is an apocalyptic number.

2001000920111 is a deficient number, since it is larger than the sum of its proper divisors (15025508305).

2001000920111 is a wasteful number, since it uses less digits than its factorization.

2001000920111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9602.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 2001000920111 its reverse (1110290001002), we get a palindrome (3111290921113).

The spelling of 2001000920111 in words is "two trillion, one billion, nine hundred twenty thousand, one hundred eleven".