221241221343 has 48 divisors (see below), whose sum is σ = 332578262016. Its totient is φ = 146973748320.

The previous prime is 221241221339. The next prime is 221241221401. The reversal of 221241221343 is 343122142122.

221241221343 is a `hidden beast` number, since 2 + 212 + 412 + 2 + 1 + 34 + 3 = 666.

It is not a de Polignac number, because 221241221343 - 2² = 221241221339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221241221303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139759930 + ... + 139761512.

It is an arithmetic number, because the mean of its divisors is an integer number (6928713792).

Almost surely, 2^221241221343 is an apocalyptic number.

221241221343 is a deficient number, since it is larger than the sum of its proper divisors (111337040673).

221241221343 is a wasteful number, since it uses less digits than its factorization.

221241221343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266 (or 3254 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 221241221343 its reverse (343122142122), we get a palindrome (564363363465).

The spelling of 221241221343 in words is "two hundred twenty-one billion, two hundred forty-one million, two hundred twenty-one thousand, three hundred forty-three".