12212210020221 has 40 divisors (see below), whose sum is σ = 18691741873728. Its totient is φ = 7941259656000.

The previous prime is 12212210020211. The next prime is 12212210020229. The reversal of 12212210020221 is 12202001221221.

It is a happy number.

12212210020221 is a `hidden beast` number, since 1 + 2 + 212 + 210 + 0 + 20 + 221 = 666.

It is not a de Polignac number, because 12212210020221 - 2¹⁰ = 12212210019197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212210020194 and 12212210020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212210020229) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15799126 + ... + 16554056.

Almost surely, 2^{12212210020221} is an apocalyptic number.

It is an amenable number.

12212210020221 is a deficient number, since it is larger than the sum of its proper divisors (6479531853507).

12212210020221 is an equidigital number, since it uses as much as digits as its factorization.

12212210020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759855 (or 759846 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12212210020221 its reverse (12202001221221), we get a palindrome (24414211241442).

The spelling of 12212210020221 in words is "twelve trillion, two hundred twelve billion, two hundred ten million, twenty thousand, two hundred twenty-one".