2002100021111 has 4 divisors (see below), whose sum is σ = 2002104317424. Its totient is φ = 2002095724800.

The previous prime is 2002100021003. The next prime is 2002100021189. The reversal of 2002100021111 is 1111200012002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002100021111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002100021092 and 2002100021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002100021191) 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, 1350395 + ... + 2414076.

It is an arithmetic number, because the mean of its divisors is an integer number (500526079356).

Almost surely, 2^{2002100021111} is an apocalyptic number.

2002100021111 is a deficient number, since it is larger than the sum of its proper divisors (4296313).

2002100021111 is an equidigital number, since it uses as much as digits as its factorization.

2002100021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296312.

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

Adding to 2002100021111 its reverse (1111200012002), we get a palindrome (3113300033113).

The spelling of 2002100021111 in words is "two trillion, two billion, one hundred million, twenty-one thousand, one hundred eleven".