2120002111 has 4 divisors (see below), whose sum is σ = 2120098824. Its totient is φ = 2119905400.

The previous prime is 2120002103. The next prime is 2120002133. The reversal of 2120002111 is 1112000212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2120002111 - 2³ = 2120002103 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 (2120002411) 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, 2016 + ... + 65146.

It is an arithmetic number, because the mean of its divisors is an integer number (530024706).

Almost surely, 2^2120002111 is an apocalyptic number.

2120002111 is a deficient number, since it is larger than the sum of its proper divisors (96713).

2120002111 is an equidigital number, since it uses as much as digits as its factorization.

2120002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96712.

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

The square root of 2120002111 is about 46043.4806568748. The cubic root of 2120002111 is about 1284.6320841050.

Adding to 2120002111 its reverse (1112000212), we get a palindrome (3232002323).

It can be divided in two parts, 212000211 and 1, that added together give a palindrome (212000212).

The spelling of 2120002111 in words is "two billion, one hundred twenty million, two thousand, one hundred eleven".