3120012111 has 4 divisors (see below), whose sum is σ = 4160016152. Its totient is φ = 2080008072.

The previous prime is 3120012101. The next prime is 3120012163. The reversal of 3120012111 is 1112100213.

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

It is not a de Polignac number, because 3120012111 - 2⁶ = 3120012047 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 (3120012101) 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, 520002016 + ... + 520002021.

It is an arithmetic number, because the mean of its divisors is an integer number (1040004038).

Almost surely, 2^3120012111 is an apocalyptic number.

3120012111 is a deficient number, since it is larger than the sum of its proper divisors (1040004041).

3120012111 is a wasteful number, since it uses less digits than its factorization.

3120012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040004040.

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

The square root of 3120012111 is about 55857.0685858111. The cubic root of 3120012111 is about 1461.2306055089.

Adding to 3120012111 its reverse (1112100213), we get a palindrome (4232112324).

The spelling of 3120012111 in words is "three billion, one hundred twenty million, twelve thousand, one hundred eleven".