3311212144861 has 2 divisors, whose sum is σ = 3311212144862. Its totient is φ = 3311212144860.

The previous prime is 3311212144859. The next prime is 3311212144937. The reversal of 3311212144861 is 1684412121133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2781673587225 + 529538557636 = 1667835^2 + 727694^2 .

It is a cyclic number.

It is not a de Polignac number, because 3311212144861 - 2¹ = 3311212144859 is a prime.

Together with 3311212144859, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3311212144861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3311212144811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655606072430 + 1655606072431.

It is an arithmetic number, because the mean of its divisors is an integer number (1655606072431).

Almost surely, 2^{3311212144861} is an apocalyptic number.

It is an amenable number.

3311212144861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3311212144861 is an equidigital number, since it uses as much as digits as its factorization.

3311212144861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

Adding to 3311212144861 its reverse (1684412121133), we get a palindrome (4995624265994).

The spelling of 3311212144861 in words is "three trillion, three hundred eleven billion, two hundred twelve million, one hundred forty-four thousand, eight hundred sixty-one".