1290710221205 has 8 divisors (see below), whose sum is σ = 1548858463800. Its totient is φ = 1032564044736.

The previous prime is 1290710221201. The next prime is 1290710221217. The reversal of 1290710221205 is 5021220170921.

It can be written as a sum of positive squares in 4 ways, for example, as 378591628804 + 912118592401 = 615298^2 + 955049^2 .

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 1290710221205 - 2² = 1290710221201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290710221201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812551 + ... + 2422139.

It is an arithmetic number, because the mean of its divisors is an integer number (193607307975).

Almost surely, 2^{1290710221205} is an apocalyptic number.

It is an amenable number.

1290710221205 is a deficient number, since it is larger than the sum of its proper divisors (258148242595).

1290710221205 is an equidigital number, since it uses as much as digits as its factorization.

1290710221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033063.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 1290710221205 in words is "one trillion, two hundred ninety billion, seven hundred ten million, two hundred twenty-one thousand, two hundred five".