221201201219 has 2 divisors, whose sum is σ = 221201201220. Its totient is φ = 221201201218.

The previous prime is 221201201201. The next prime is 221201201227. The reversal of 221201201219 is 912102102122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221201201219 is a prime.

It is a super-2 number, since 2×221201201219² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 221201201194 and 221201201203.

It is not a weakly prime, because it can be changed into another prime (221201203219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600600609 + 110600600610.

It is an arithmetic number, because the mean of its divisors is an integer number (110600600610).

Almost surely, 2^221201201219 is an apocalyptic number.

221201201219 is a deficient number, since it is larger than the sum of its proper divisors (1).

221201201219 is an equidigital number, since it uses as much as digits as its factorization.

221201201219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 221201201219 in words is "two hundred twenty-one billion, two hundred one million, two hundred one thousand, two hundred nineteen".