221414213573636 has 6 divisors (see below), whose sum is σ = 387474873753870. Its totient is φ = 110707106786816.

The previous prime is 221414213573633. The next prime is 221414213573647. The reversal of 221414213573636 is 636375312414122.

It can be written as a sum of positive squares in only one way, i.e., 191303642537536 + 30110571036100 = 13831256^2 + 5487310^2 .

It is not an unprimeable number, because it can be changed into a prime (221414213573633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27676776696701 + ... + 27676776696708.

It is an arithmetic number, because the mean of its divisors is an integer number (64579145625645).

Almost surely, 2^{221414213573636} is an apocalyptic number.

It is an amenable number.

221414213573636 is a deficient number, since it is larger than the sum of its proper divisors (166060660180234).

221414213573636 is a wasteful number, since it uses less digits than its factorization.

221414213573636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55353553393413 (or 55353553393411 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 50.

Adding to 221414213573636 its reverse (636375312414122), we get a palindrome (857789525987758).

The spelling of 221414213573636 in words is "two hundred twenty-one trillion, four hundred fourteen billion, two hundred thirteen million, five hundred seventy-three thousand, six hundred thirty-six".