221000213323 has 2 divisors, whose sum is σ = 221000213324. Its totient is φ = 221000213322.

The previous prime is 221000213281. The next prime is 221000213327. The reversal of 221000213323 is 323312000122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221000213323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221000213323.

It is not a weakly prime, because it can be changed into another prime (221000213327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500106661 + 110500106662.

It is an arithmetic number, because the mean of its divisors is an integer number (110500106662).

Almost surely, 2^221000213323 is an apocalyptic number.

221000213323 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000213323 is an equidigital number, since it uses as much as digits as its factorization.

221000213323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221000213323 its reverse (323312000122), we get a palindrome (544312213445).

The spelling of 221000213323 in words is "two hundred twenty-one billion, two hundred thirteen thousand, three hundred twenty-three".