221201212219 has 8 divisors (see below), whose sum is σ = 239643139680. Its totient is φ = 202963063296.

The previous prime is 221201212189. The next prime is 221201212247. The reversal of 221201212219 is 912212102122.

It is a happy number.

221201212219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221201212219 is a prime.

It is a super-2 number, since 2×221201212219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221201212193 and 221201212202.

It is not an unprimeable number, because it can be changed into a prime (221201212249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50942374 + ... + 50946715.

It is an arithmetic number, because the mean of its divisors is an integer number (29955392460).

Almost surely, 2^221201212219 is an apocalyptic number.

221201212219 is a deficient number, since it is larger than the sum of its proper divisors (18441927461).

221201212219 is a wasteful number, since it uses less digits than its factorization.

221201212219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101889269.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 221201212219 in words is "two hundred twenty-one billion, two hundred one million, two hundred twelve thousand, two hundred nineteen".