2205210455521 has 8 divisors (see below), whose sum is σ = 2241071596800. Its totient is φ = 2169547991520.

The previous prime is 2205210455443. The next prime is 2205210455531. The reversal of 2205210455521 is 1255540125022.

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 2205210455521 - 2²¹ = 2205208358369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205210455531) 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, 49646941 + ... + 49691338.

It is an arithmetic number, because the mean of its divisors is an integer number (280133949600).

Almost surely, 2^{2205210455521} is an apocalyptic number.

It is an amenable number.

2205210455521 is a deficient number, since it is larger than the sum of its proper divisors (35861141279).

2205210455521 is an equidigital number, since it uses as much as digits as its factorization.

2205210455521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99338639.

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 2205210455521 in words is "two trillion, two hundred five billion, two hundred ten million, four hundred fifty-five thousand, five hundred twenty-one".