3112220111111 has 4 divisors (see below), whose sum is σ = 3154853263392. Its totient is φ = 3069586958832.

The previous prime is 3112220111107. The next prime is 3112220111113. The reversal of 3112220111111 is 1111110222113.

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 3112220111111 - 2² = 3112220111107 is a prime.

It is a super-3 number, since 3×3112220111111³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3112220111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112220111113) 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, 21316576031 + ... + 21316576176.

It is an arithmetic number, because the mean of its divisors is an integer number (788713315848).

Almost surely, 2^{3112220111111} is an apocalyptic number.

3112220111111 is a deficient number, since it is larger than the sum of its proper divisors (42633152281).

3112220111111 is an equidigital number, since it uses as much as digits as its factorization.

3112220111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42633152280.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 3112220111111 its reverse (1111110222113), we get a palindrome (4223330333224).

The spelling of 3112220111111 in words is "three trillion, one hundred twelve billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".