12212210211021 has 24 divisors (see below), whose sum is σ = 18119434149024. Its totient is φ = 7920199738080.

The previous prime is 12212210211013. The next prime is 12212210211059. The reversal of 12212210211021 is 12011201221221.

12212210211021 is a `hidden beast` number, since 1 + 221 + 2 + 210 + 211 + 0 + 21 = 666.

12212210211021 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 12212210211021 - 2³ = 12212210211013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212210210985 and 12212210211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212210211121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712875 + ... + 4993256.

It is an arithmetic number, because the mean of its divisors is an integer number (754976422876).

Almost surely, 2^{12212210211021} is an apocalyptic number.

It is an amenable number.

12212210211021 is a deficient number, since it is larger than the sum of its proper divisors (5907223938003).

12212210211021 is a wasteful number, since it uses less digits than its factorization.

12212210211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712601 (or 5712598 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212210211021 its reverse (12011201221221), we get a palindrome (24223411432242).

The spelling of 12212210211021 in words is "twelve trillion, two hundred twelve billion, two hundred ten million, two hundred eleven thousand, twenty-one".