212221010122221 has 8 divisors (see below), whose sum is σ = 283443393419424. Its totient is φ = 141239650119920.

The previous prime is 212221010122217. The next prime is 212221010122229. The reversal of 212221010122221 is 122221010122212.

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 212221010122221 - 2² = 212221010122217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221010122229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60255821670 + ... + 60255825191.

It is an arithmetic number, because the mean of its divisors is an integer number (35430424177428).

Almost surely, 2^{212221010122221} is an apocalyptic number.

It is an amenable number.

212221010122221 is a deficient number, since it is larger than the sum of its proper divisors (71222383297203).

212221010122221 is a wasteful number, since it uses less digits than its factorization.

212221010122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120511647451.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212221010122221 its reverse (122221010122212), we get a palindrome (334442020244433).

Subtracting from 212221010122221 its reverse (122221010122212), we obtain a palindrome (90000000000009).

The spelling of 212221010122221 in words is "two hundred twelve trillion, two hundred twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty-one".