4002002111 has 4 divisors (see below), whose sum is σ = 4009187592. Its totient is φ = 3994816632.

The previous prime is 4002002099. The next prime is 4002002141. The reversal of 4002002111 is 1112002004.

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 4002002111 - 2²⁶ = 3934893247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4002002092 and 4002002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002002141) 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, 3591905 + ... + 3593018.

It is an arithmetic number, because the mean of its divisors is an integer number (1002296898).

Almost surely, 2^4002002111 is an apocalyptic number.

4002002111 is a deficient number, since it is larger than the sum of its proper divisors (7185481).

4002002111 is an equidigital number, since it uses as much as digits as its factorization.

4002002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7185480.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 4002002111 is about 63261.3793004863. The cubic root of 4002002111 is about 1587.6658538852.

Adding to 4002002111 its reverse (1112002004), we get a palindrome (5114004115).

The spelling of 4002002111 in words is "four billion, two million, two thousand, one hundred eleven".