221403213241 has 16 divisors (see below), whose sum is σ = 255673313280. Its totient is φ = 187793879040.

The previous prime is 221403213233. The next prime is 221403213287. The reversal of 221403213241 is 142312304122.

It is a cyclic number.

It is not a de Polignac number, because 221403213241 - 2³ = 221403213233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221403211241) 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, 7154121 + ... + 7185001.

It is an arithmetic number, because the mean of its divisors is an integer number (15979582080).

Almost surely, 2^221403213241 is an apocalyptic number.

It is an amenable number.

221403213241 is a deficient number, since it is larger than the sum of its proper divisors (34270100039).

221403213241 is a wasteful number, since it uses less digits than its factorization.

221403213241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41544.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221403213241 its reverse (142312304122), we get a palindrome (363715517363).

The spelling of 221403213241 in words is "two hundred twenty-one billion, four hundred three million, two hundred thirteen thousand, two hundred forty-one".