7121309248205 has 8 divisors (see below), whose sum is σ = 8545628377752. Its totient is φ = 5697009211968.

The previous prime is 7121309248199. The next prime is 7121309248223. The reversal of 7121309248205 is 5028429031217.

It can be written as a sum of positive squares in 4 ways, for example, as 3791786457001 + 3329522791204 = 1947251^2 + 1824698^2 .

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 7121309248205 - 2¹⁰ = 7121309247181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939542 + ... + 5455511.

It is an arithmetic number, because the mean of its divisors is an integer number (1068203547219).

Almost surely, 2^{7121309248205} is an apocalyptic number.

It is an amenable number.

7121309248205 is a deficient number, since it is larger than the sum of its proper divisors (1424319129547).

7121309248205 is a wasteful number, since it uses less digits than its factorization.

7121309248205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546655.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 7121309248205 in words is "seven trillion, one hundred twenty-one billion, three hundred nine million, two hundred forty-eight thousand, two hundred five".