3111003231221 has 8 divisors (see below), whose sum is σ = 3113406616320. Its totient is φ = 3108600049072.

The previous prime is 3111003231209. The next prime is 3111003231227. The reversal of 3111003231221 is 1221323001113.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3111003231221 is a prime.

It is a super-2 number, since 2×3111003231221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3111003231193 and 3111003231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111003231227) 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, 47449700 + ... + 47515218.

It is an arithmetic number, because the mean of its divisors is an integer number (389175827040).

Almost surely, 2^{3111003231221} is an apocalyptic number.

It is an amenable number.

3111003231221 is a deficient number, since it is larger than the sum of its proper divisors (2403385099).

3111003231221 is a wasteful number, since it uses less digits than its factorization.

3111003231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101475.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3111003231221 its reverse (1221323001113), we get a palindrome (4332326232334).

The spelling of 3111003231221 in words is "three trillion, one hundred eleven billion, three million, two hundred thirty-one thousand, two hundred twenty-one".