3331311111221 has 16 divisors (see below), whose sum is σ = 3436660664640. Its totient is φ = 3227940458880.

The previous prime is 3331311111209. The next prime is 3331311111277. The reversal of 3331311111221 is 1221111131333.

It is not a de Polignac number, because 3331311111221 - 2³⁰ = 3330237369397 is a prime.

It is a super-2 number, since 2×3331311111221² (a number of 26 digits) 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 (3331311011221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257336 + ... + 2594001.

It is an arithmetic number, because the mean of its divisors is an integer number (214791291540).

Almost surely, 2^{3331311111221} is an apocalyptic number.

It is an amenable number.

3331311111221 is a deficient number, since it is larger than the sum of its proper divisors (105349553419).

3331311111221 is a wasteful number, since it uses less digits than its factorization.

3331311111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851684.

The product of its digits is 324, while the sum is 23.

Adding to 3331311111221 its reverse (1221111131333), we get a palindrome (4552422242554).

The spelling of 3331311111221 in words is "three trillion, three hundred thirty-one billion, three hundred eleven million, one hundred eleven thousand, two hundred twenty-one".