3303212112661 has 2 divisors, whose sum is σ = 3303212112662. Its totient is φ = 3303212112660.

The previous prime is 3303212112659. The next prime is 3303212112713. The reversal of 3303212112661 is 1662112123033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2019056274225 + 1284155838436 = 1420935^2 + 1133206^2 .

It is a cyclic number.

It is not a de Polignac number, because 3303212112661 - 2¹ = 3303212112659 is a prime.

It is a super-2 number, since 2×3303212112661² (a number of 26 digits) contains 22 as substring.

Together with 3303212112659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3303212119661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1651606056330 + 1651606056331.

It is an arithmetic number, because the mean of its divisors is an integer number (1651606056331).

Almost surely, 2^{3303212112661} is an apocalyptic number.

It is an amenable number.

3303212112661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3303212112661 is an equidigital number, since it uses as much as digits as its factorization.

3303212112661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 3303212112661 its reverse (1662112123033), we get a palindrome (4965324235694).

The spelling of 3303212112661 in words is "three trillion, three hundred three billion, two hundred twelve million, one hundred twelve thousand, six hundred sixty-one".