3101311122221 has 8 divisors (see below), whose sum is σ = 3536336664504. Its totient is φ = 2694351744000.

The previous prime is 3101311122193. The next prime is 3101311122223. The reversal of 3101311122221 is 1222211131013.

It can be written as a sum of positive squares in 4 ways, for example, as 327790600900 + 2773520521321 = 572530^2 + 1665389^2 .

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 3101311122221 - 2¹⁸ = 3101310860077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3101311122193 and 3101311122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3101311122223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7016540780 + ... + 7016541221.

It is an arithmetic number, because the mean of its divisors is an integer number (442042083063).

Almost surely, 2^{3101311122221} is an apocalyptic number.

It is an amenable number.

3101311122221 is a deficient number, since it is larger than the sum of its proper divisors (435025542283).

3101311122221 is a wasteful number, since it uses less digits than its factorization.

3101311122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033082031.

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

Adding to 3101311122221 its reverse (1222211131013), we get a palindrome (4323522253234).

The spelling of 3101311122221 in words is "three trillion, one hundred one billion, three hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".