221234101999 has 2 divisors, whose sum is σ = 221234102000. Its totient is φ = 221234101998.

The previous prime is 221234101997. The next prime is 221234102027. The reversal of 221234101999 is 999101432122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221234101999 - 2¹ = 221234101997 is a prime.

Together with 221234101997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221234101997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617050999 + 110617051000.

It is an arithmetic number, because the mean of its divisors is an integer number (110617051000).

Almost surely, 2^221234101999 is an apocalyptic number.

221234101999 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234101999 is an equidigital number, since it uses as much as digits as its factorization.

221234101999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 221234101999 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred one thousand, nine hundred ninety-nine".