212221101230219 has 4 divisors (see below), whose sum is σ = 212367764052144. Its totient is φ = 212074438408296.

The previous prime is 212221101230189. The next prime is 212221101230233. The reversal of 212221101230219 is 912032101122212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212221101230219 is a prime.

It is a super-2 number, since 2×212221101230219² (a number of 29 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 = 212221101230191 and 212221101230200.

It is not an unprimeable number, because it can be changed into a prime (212221101230279) 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 3 ways as a sum of consecutive naturals, for example, 73331408792 + ... + 73331411685.

It is an arithmetic number, because the mean of its divisors is an integer number (53091941013036).

Almost surely, 2^{212221101230219} is an apocalyptic number.

212221101230219 is a deficient number, since it is larger than the sum of its proper divisors (146662821925).

212221101230219 is a wasteful number, since it uses less digits than its factorization.

212221101230219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146662821924.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 212221101230219 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred one million, two hundred thirty thousand, two hundred nineteen".