3350221612561 has 2 divisors, whose sum is σ = 3350221612562. Its totient is φ = 3350221612560.

The previous prime is 3350221612547. The next prime is 3350221612631. The reversal of 3350221612561 is 1652161220533.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3323945202561 + 26276410000 = 1823169^2 + 162100^2 .

It is a cyclic number.

It is not a de Polignac number, because 3350221612561 - 2¹³ = 3350221604369 is a prime.

It is a super-2 number, since 2×3350221612561² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3350221612561.

It is not a weakly prime, because it can be changed into another prime (3350221615561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1675110806280 + 1675110806281.

It is an arithmetic number, because the mean of its divisors is an integer number (1675110806281).

Almost surely, 2^{3350221612561} is an apocalyptic number.

It is an amenable number.

3350221612561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3350221612561 is an equidigital number, since it uses as much as digits as its factorization.

3350221612561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 3350221612561 in words is "three trillion, three hundred fifty billion, two hundred twenty-one million, six hundred twelve thousand, five hundred sixty-one".