221313203343 has 16 divisors (see below), whose sum is σ = 327880550400. Its totient is φ = 147538023480.

The previous prime is 221313203339. The next prime is 221313203357. The reversal of 221313203343 is 343302313122.

221313203343 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 1 + 320 + 334 + 3 = 666.

It is not a de Polignac number, because 221313203343 - 2² = 221313203339 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 (221313203323) 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, 1111698 + ... + 1295568.

It is an arithmetic number, because the mean of its divisors is an integer number (20492534400).

Almost surely, 2^221313203343 is an apocalyptic number.

221313203343 is a deficient number, since it is larger than the sum of its proper divisors (106567347057).

221313203343 is a wasteful number, since it uses less digits than its factorization.

221313203343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228459 (or 228453 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 221313203343 its reverse (343302313122), we get a palindrome (564615516465).

The spelling of 221313203343 in words is "two hundred twenty-one billion, three hundred thirteen million, two hundred three thousand, three hundred forty-three".