221353388048379 has 4 divisors (see below), whose sum is σ = 295137850731176. Its totient is φ = 147568925365584.

The previous prime is 221353388048341. The next prime is 221353388048489. The reversal of 221353388048379 is 973840883353122.

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

It is not a de Polignac number, because 221353388048379 - 2¹⁵ = 221353388015611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221353388043379) 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, 36892231341394 + ... + 36892231341399.

It is an arithmetic number, because the mean of its divisors is an integer number (73784462682794).

Almost surely, 2^{221353388048379} is an apocalyptic number.

221353388048379 is a deficient number, since it is larger than the sum of its proper divisors (73784462682797).

221353388048379 is an equidigital number, since it uses as much as digits as its factorization.

221353388048379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73784462682796.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 221353388048379 in words is "two hundred twenty-one trillion, three hundred fifty-three billion, three hundred eighty-eight million, forty-eight thousand, three hundred seventy-nine".