3111201212011 has 4 divisors (see below), whose sum is σ = 3111207687000. Its totient is φ = 3111194737024.

The previous prime is 3111201211973. The next prime is 3111201212029. The reversal of 3111201212011 is 1102121021113.

It is a happy number.

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 3111201212011 - 2⁷ = 3111201211883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111201212611) 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, 2453461 + ... + 3498838.

It is an arithmetic number, because the mean of its divisors is an integer number (777801921750).

Almost surely, 2^{3111201212011} is an apocalyptic number.

3111201212011 is a deficient number, since it is larger than the sum of its proper divisors (6474989).

3111201212011 is an equidigital number, since it uses as much as digits as its factorization.

3111201212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6474988.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 3111201212011 its reverse (1102121021113), we get a palindrome (4213322233124).

The spelling of 3111201212011 in words is "three trillion, one hundred eleven billion, two hundred one million, two hundred twelve thousand, eleven".