221000414243533 has 4 divisors (see below), whose sum is σ = 221002732679040. Its totient is φ = 220998095808028.

The previous prime is 221000414243527. The next prime is 221000414243561. The reversal of 221000414243533 is 335342414000122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221000414243533 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 (221000414243593) 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, 1159074763 + ... + 1159265416.

It is an arithmetic number, because the mean of its divisors is an integer number (55250683169760).

Almost surely, 2^{221000414243533} is an apocalyptic number.

It is an amenable number.

221000414243533 is a deficient number, since it is larger than the sum of its proper divisors (2318435507).

221000414243533 is an equidigital number, since it uses as much as digits as its factorization.

221000414243533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318435506.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 221000414243533 its reverse (335342414000122), we get a palindrome (556342828243655).

The spelling of 221000414243533 in words is "two hundred twenty-one trillion, four hundred fourteen million, two hundred forty-three thousand, five hundred thirty-three".