2001022010111 has 4 divisors (see below), whose sum is σ = 2025130709112. Its totient is φ = 1976913311112.

The previous prime is 2001022010087. The next prime is 2001022010129. The reversal of 2001022010111 is 1110102201002.

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

It is not a de Polignac number, because 2001022010111 - 2⁶ = 2001022010047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001022010092 and 2001022010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001222010111) 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, 12054349376 + ... + 12054349541.

It is an arithmetic number, because the mean of its divisors is an integer number (506282677278).

Almost surely, 2^{2001022010111} is an apocalyptic number.

2001022010111 is a deficient number, since it is larger than the sum of its proper divisors (24108699001).

2001022010111 is an equidigital number, since it uses as much as digits as its factorization.

2001022010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24108699000.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2001022010111 its reverse (1110102201002), we get a palindrome (3111124211113).

The spelling of 2001022010111 in words is "two trillion, one billion, twenty-two million, ten thousand, one hundred eleven".