221046899 has 2 divisors, whose sum is σ = 221046900. Its totient is φ = 221046898.

The previous prime is 221046853. The next prime is 221046901. The reversal of 221046899 is 998640122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221046899 is a prime.

Together with 221046901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221046809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110523449 + 110523450.

It is an arithmetic number, because the mean of its divisors is an integer number (110523450).

Almost surely, 2^221046899 is an apocalyptic number.

221046899 is a deficient number, since it is larger than the sum of its proper divisors (1).

221046899 is an equidigital number, since it uses as much as digits as its factorization.

221046899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 221046899 is about 14867.6460477104. The cubic root of 221046899 is about 604.6371241040.

The spelling of 221046899 in words is "two hundred twenty-one million, forty-six thousand, eight hundred ninety-nine".