3111221021311 has 8 divisors (see below), whose sum is σ = 3367382631200. Its totient is φ = 2857464685152.

The previous prime is 3111221021291. The next prime is 3111221021323. The reversal of 3111221021311 is 1131201221113.

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

It is a cyclic number.

It is not a de Polignac number, because 3111221021311 - 2⁹ = 3111221020799 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 (3111221021341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601315740 + ... + 601320913.

It is an arithmetic number, because the mean of its divisors is an integer number (420922828900).

Almost surely, 2^{3111221021311} is an apocalyptic number.

3111221021311 is a deficient number, since it is larger than the sum of its proper divisors (256161609889).

3111221021311 is a wasteful number, since it uses less digits than its factorization.

3111221021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202636865.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 3111221021311 its reverse (1131201221113), we get a palindrome (4242422242424).

The spelling of 3111221021311 in words is "three trillion, one hundred eleven billion, two hundred twenty-one million, twenty-one thousand, three hundred eleven".