12212022222221 has 8 divisors (see below), whose sum is σ = 12320311384320. Its totient is φ = 12103736887872.

The previous prime is 12212022222203. The next prime is 12212022222233. The reversal of 12212022222221 is 12222222021221.

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 12212022222221 - 2³⁸ = 11937144315277 is a prime.

It is a super-2 number, since 2×12212022222221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212022222251) 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, 5653700 + ... + 7509218.

It is an arithmetic number, because the mean of its divisors is an integer number (1540038923040).

Almost surely, 2^{12212022222221} is an apocalyptic number.

It is an amenable number.

12212022222221 is a deficient number, since it is larger than the sum of its proper divisors (108289162099).

12212022222221 is a wasteful number, since it uses less digits than its factorization.

12212022222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913875.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12212022222221 its reverse (12222222021221), we get a palindrome (24434244243442).

The spelling of 12212022222221 in words is "twelve trillion, two hundred twelve billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".