221448675364093 has 16 divisors (see below), whose sum is σ = 224302549489200. Its totient is φ = 218612790259200.

The previous prime is 221448675364039. The next prime is 221448675364121. The reversal of 221448675364093 is 390463576844122.

It can be written as a sum of positive squares in 8 ways, for example, as 15692515658884 + 205756159705209 = 3961378^2 + 14344203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221448675364093 is a prime.

It is a super-2 number, since 2×221448675364093² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221448675364003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636063183 + ... + 1636198531.

It is an arithmetic number, because the mean of its divisors is an integer number (14018909343075).

It is a 2-persistent number, because it is pandigital, and so is 2⋅221448675364093 = 442897350728186, but 3⋅221448675364093 = 664346026092279 is not.

Almost surely, 2^{221448675364093} is an apocalyptic number.

It is an amenable number.

221448675364093 is a deficient number, since it is larger than the sum of its proper divisors (2853874125107).

221448675364093 is a wasteful number, since it uses less digits than its factorization.

221448675364093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201648.

The product of its (nonzero) digits is 209018880, while the sum is 64.

The spelling of 221448675364093 in words is "two hundred twenty-one trillion, four hundred forty-eight billion, six hundred seventy-five million, three hundred sixty-four thousand, ninety-three".