221201323219 has 2 divisors, whose sum is σ = 221201323220. Its totient is φ = 221201323218.

The previous prime is 221201323193. The next prime is 221201323283. The reversal of 221201323219 is 912323102122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221201323219 is a prime.

It is a super-2 number, since 2×221201323219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221201323919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600661609 + 110600661610.

It is an arithmetic number, because the mean of its divisors is an integer number (110600661610).

Almost surely, 2^221201323219 is an apocalyptic number.

221201323219 is a deficient number, since it is larger than the sum of its proper divisors (1).

221201323219 is an equidigital number, since it uses as much as digits as its factorization.

221201323219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 221201323219 in words is "two hundred twenty-one billion, two hundred one million, three hundred twenty-three thousand, two hundred nineteen".