221000200994623 has 2 divisors, whose sum is σ = 221000200994624. Its totient is φ = 221000200994622.

The previous prime is 221000200994611. The next prime is 221000200994641. The reversal of 221000200994623 is 326499002000122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221000200994623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221000200998623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500100497311 + 110500100497312.

It is an arithmetic number, because the mean of its divisors is an integer number (110500100497312).

Almost surely, 2^{221000200994623} is an apocalyptic number.

221000200994623 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000200994623 is an equidigital number, since it uses as much as digits as its factorization.

221000200994623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

Adding to 221000200994623 its reverse (326499002000122), we get a palindrome (547499202994745).

The spelling of 221000200994623 in words is "two hundred twenty-one trillion, two hundred million, nine hundred ninety-four thousand, six hundred twenty-three".