221646257673103 has 4 divisors (see below), whose sum is σ = 224682507778288. Its totient is φ = 218610007567920.

The previous prime is 221646257673077. The next prime is 221646257673107. The reversal of 221646257673103 is 301376752646122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221646257673103 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 (221646257673107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1518125052483 + ... + 1518125052628.

It is an arithmetic number, because the mean of its divisors is an integer number (56170626944572).

Almost surely, 2^{221646257673103} is an apocalyptic number.

221646257673103 is a deficient number, since it is larger than the sum of its proper divisors (3036250105185).

221646257673103 is an equidigital number, since it uses as much as digits as its factorization.

221646257673103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036250105184.

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 221646257673103 in words is "two hundred twenty-one trillion, six hundred forty-six billion, two hundred fifty-seven million, six hundred seventy-three thousand, one hundred three".