3311120121221 has 48 divisors (see below), whose sum is σ = 3782116531200. Its totient is φ = 2893506105600.

The previous prime is 3311120121209. The next prime is 3311120121241. The reversal of 3311120121221 is 1221210211133.

3311120121221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3311120121221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3311120121193 and 3311120121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3311120121241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 487427801 + ... + 487434593.

It is an arithmetic number, because the mean of its divisors is an integer number (78794094400).

Almost surely, 2^{3311120121221} is an apocalyptic number.

3311120121221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3311120121221 is a deficient number, since it is larger than the sum of its proper divisors (470996409979).

3311120121221 is a wasteful number, since it uses less digits than its factorization.

3311120121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7698 (or 7687 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 3311120121221 its reverse (1221210211133), we get a palindrome (4532330332354).

The spelling of 3311120121221 in words is "three trillion, three hundred eleven billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty-one".