2205018268521 has 8 divisors (see below), whose sum is σ = 2940031443360. Its totient is φ = 1470008636352.

The previous prime is 2205018268511. The next prime is 2205018268589. The reversal of 2205018268521 is 1258628105022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2205018268521 - 2⁷ = 2205018268393 is a prime.

It is a super-2 number, since 2×2205018268521² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2205018268511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436266 + ... + 2544188.

It is an arithmetic number, because the mean of its divisors is an integer number (367503930420).

Almost surely, 2^{2205018268521} is an apocalyptic number.

It is an amenable number.

2205018268521 is a deficient number, since it is larger than the sum of its proper divisors (735013174839).

2205018268521 is a wasteful number, since it uses less digits than its factorization.

2205018268521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771335.

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 2205018268521 in words is "two trillion, two hundred five billion, eighteen million, two hundred sixty-eight thousand, five hundred twenty-one".