221004411243 has 96 divisors (see below), whose sum is σ = 387242933760. Its totient is φ = 110732912640.

The previous prime is 221004411241. The next prime is 221004411311. The reversal of 221004411243 is 342114400122.

It is not a de Polignac number, because 221004411243 - 2¹ = 221004411241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221004411241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61099771 + ... + 61103387.

It is an arithmetic number, because the mean of its divisors is an integer number (4033780560).

Almost surely, 2^221004411243 is an apocalyptic number.

221004411243 is a deficient number, since it is larger than the sum of its proper divisors (166238522517).

221004411243 is a wasteful number, since it uses less digits than its factorization.

221004411243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977 (or 4970 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221004411243 its reverse (342114400122), we get a palindrome (563118811365).

The spelling of 221004411243 in words is "two hundred twenty-one billion, four million, four hundred eleven thousand, two hundred forty-three".