221212120110211 has 8 divisors (see below), whose sum is σ = 221252604632000. Its totient is φ = 221171637735720.

The previous prime is 221212120110187. The next prime is 221212120110253. The reversal of 221212120110211 is 112011021212122.

It is a happy number.

221212120110211 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 not a de Polignac number, because 221212120110211 - 2¹⁹ = 221212119585923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221212120111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213269716 + ... + 214304446.

It is an arithmetic number, because the mean of its divisors is an integer number (27656575579000).

Almost surely, 2^{221212120110211} is an apocalyptic number.

221212120110211 is a deficient number, since it is larger than the sum of its proper divisors (40484521789).

221212120110211 is a wasteful number, since it uses less digits than its factorization.

221212120110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073649.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221212120110211 its reverse (112011021212122), we get a palindrome (333223141322333).

The spelling of 221212120110211 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred twenty million, one hundred ten thousand, two hundred eleven".