2681447221 has 8 divisors (see below), whose sum is σ = 2702730240. Its totient is φ = 2660247312.

The previous prime is 2681447189. The next prime is 2681447231. The reversal of 2681447221 is 1227441862.

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 2681447221 - 2⁵ = 2681447189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681447231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44820 + ... + 85858.

It is an arithmetic number, because the mean of its divisors is an integer number (337841280).

Almost surely, 2^2681447221 is an apocalyptic number.

It is an amenable number.

2681447221 is a deficient number, since it is larger than the sum of its proper divisors (21283019).

2681447221 is a wasteful number, since it uses less digits than its factorization.

2681447221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41555.

The product of its digits is 43008, while the sum is 37.

The square root of 2681447221 is about 51782.6922919232. The cubic root of 2681447221 is about 1389.2798956263.

The spelling of 2681447221 in words is "two billion, six hundred eighty-one million, four hundred forty-seven thousand, two hundred twenty-one".