2109302747281 has 4 divisors (see below), whose sum is σ = 2233379379492. Its totient is φ = 1985226115072.

The previous prime is 2109302747261. The next prime is 2109302747303. The reversal of 2109302747281 is 1827472039012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1224120960000 + 885181787281 = 1106400^2 + 940841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109302747281 - 2¹⁷ = 2109302616209 is a prime.

It is a super-2 number, since 2×2109302747281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109302747261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62038316080 + ... + 62038316113.

It is an arithmetic number, because the mean of its divisors is an integer number (558344844873).

Almost surely, 2^{2109302747281} is an apocalyptic number.

It is an amenable number.

2109302747281 is a deficient number, since it is larger than the sum of its proper divisors (124076632211).

2109302747281 is a wasteful number, since it uses less digits than its factorization.

2109302747281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124076632210.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 2109302747281 in words is "two trillion, one hundred nine billion, three hundred two million, seven hundred forty-seven thousand, two hundred eighty-one".