12212120102221 has 16 divisors (see below), whose sum is σ = 13925395943424. Its totient is φ = 10609423928064.

The previous prime is 12212120102213. The next prime is 12212120102243. The reversal of 12212120102221 is 12220102121221.

12212120102221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12212120102221 - 2³ = 12212120102213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212120202221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11841940 + ... + 12831826.

It is an arithmetic number, because the mean of its divisors is an integer number (870337246464).

Almost surely, 2^{12212120102221} is an apocalyptic number.

It is an amenable number.

12212120102221 is a deficient number, since it is larger than the sum of its proper divisors (1713275841203).

12212120102221 is a wasteful number, since it uses less digits than its factorization.

12212120102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045740.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12212120102221 its reverse (12220102121221), we get a palindrome (24432222223442).

The spelling of 12212120102221 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred two thousand, two hundred twenty-one".