4002012111 has 8 divisors (see below), whose sum is σ = 5370004144. Its totient is φ = 2651014080.

The previous prime is 4002012103. The next prime is 4002012169. The reversal of 4002012111 is 1112102004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4002012111 - 2³ = 4002012103 is a prime.

It is a super-2 number, since 2×4002012111² = 32032201873181352642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002014111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4247950 + ... + 4248891.

It is an arithmetic number, because the mean of its divisors is an integer number (671250518).

Almost surely, 2^4002012111 is an apocalyptic number.

4002012111 is a deficient number, since it is larger than the sum of its proper divisors (1367992033).

4002012111 is a wasteful number, since it uses less digits than its factorization.

4002012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8497001.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 4002012111 is about 63261.4583376008. The cubic root of 4002012111 is about 1587.6671762771.

Adding to 4002012111 its reverse (1112102004), we get a palindrome (5114114115).

The spelling of 4002012111 in words is "four billion, two million, twelve thousand, one hundred eleven".