221827678663043 has 4 divisors (see below), whose sum is σ = 234876365643240. Its totient is φ = 208778991682848.

The previous prime is 221827678663039. The next prime is 221827678663049. The reversal of 221827678663043 is 340366876728122.

221827678663043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221827678663043 - 2² = 221827678663039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221827678663049) 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, 6524343490073 + ... + 6524343490106.

It is an arithmetic number, because the mean of its divisors is an integer number (58719091410810).

Almost surely, 2^{221827678663043} is an apocalyptic number.

221827678663043 is a deficient number, since it is larger than the sum of its proper divisors (13048686980197).

221827678663043 is a wasteful number, since it uses less digits than its factorization.

221827678663043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13048686980196.

The product of its (nonzero) digits is 195084288, while the sum is 65.

The spelling of 221827678663043 in words is "two hundred twenty-one trillion, eight hundred twenty-seven billion, six hundred seventy-eight million, six hundred sixty-three thousand, forty-three".