3111133211221 has 32 divisors (see below), whose sum is σ = 3671093809152. Its totient is φ = 2581351713600.

The previous prime is 3111133211213. The next prime is 3111133211279. The reversal of 3111133211221 is 1221123311113.

It is a cyclic number.

It is not a de Polignac number, because 3111133211221 - 2³ = 3111133211213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3111133211192 and 3111133211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111133215221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31418430 + ... + 31517296.

It is an arithmetic number, because the mean of its divisors is an integer number (114721681536).

Almost surely, 2^{3111133211221} is an apocalyptic number.

It is an amenable number.

3111133211221 is a deficient number, since it is larger than the sum of its proper divisors (559960597931).

3111133211221 is a wasteful number, since it uses less digits than its factorization.

3111133211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99969.

The product of its digits is 216, while the sum is 22.

Adding to 3111133211221 its reverse (1221123311113), we get a palindrome (4332256522334).

The spelling of 3111133211221 in words is "three trillion, one hundred eleven billion, one hundred thirty-three million, two hundred eleven thousand, two hundred twenty-one".