221400303343 has 4 divisors (see below), whose sum is σ = 221407208568. Its totient is φ = 221393398120.

The previous prime is 221400303329. The next prime is 221400303353. The reversal of 221400303343 is 343303004122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221400303343 - 2²¹ = 221398206191 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 (221400303323) 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, 3404293 + ... + 3468718.

It is an arithmetic number, because the mean of its divisors is an integer number (55351802142).

Almost surely, 2^221400303343 is an apocalyptic number.

221400303343 is a deficient number, since it is larger than the sum of its proper divisors (6905225).

221400303343 is an equidigital number, since it uses as much as digits as its factorization.

221400303343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905224.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 221400303343 its reverse (343303004122), we get a palindrome (564703307465).

The spelling of 221400303343 in words is "two hundred twenty-one billion, four hundred million, three hundred three thousand, three hundred forty-three".