3561221341 has 2 divisors, whose sum is σ = 3561221342. Its totient is φ = 3561221340.

The previous prime is 3561221311. The next prime is 3561221413. The reversal of 3561221341 is 1431221653.

Together with next prime (3561221413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3361564441 + 199656900 = 57979^2 + 14130^2 .

It is a cyclic number.

It is not a de Polignac number, because 3561221341 - 2⁵ = 3561221309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3561221311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780610670 + 1780610671.

It is an arithmetic number, because the mean of its divisors is an integer number (1780610671).

Almost surely, 2^3561221341 is an apocalyptic number.

It is an amenable number.

3561221341 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561221341 is an equidigital number, since it uses as much as digits as its factorization.

3561221341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 3561221341 is about 59675.9695438625. The cubic root of 3561221341 is about 1527.0959396559.

Adding to 3561221341 its reverse (1431221653), we get a palindrome (4992442994).

It can be divided in two parts, 35612 and 21341, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 3561221341 in words is "three billion, five hundred sixty-one million, two hundred twenty-one thousand, three hundred forty-one".