12010012220221 has 4 divisors (see below), whose sum is σ = 12010019782912. Its totient is φ = 12010004657532.

The previous prime is 12010012220197. The next prime is 12010012220237. The reversal of 12010012220221 is 12202221001021.

It is a happy number.

12010012220221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12010012220221 - 2¹⁷ = 12010012089149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010012220195 and 12010012220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010012223221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378525 + ... + 4915618.

It is an arithmetic number, because the mean of its divisors is an integer number (3002504945728).

Almost surely, 2^{12010012220221} is an apocalyptic number.

It is an amenable number.

12010012220221 is a deficient number, since it is larger than the sum of its proper divisors (7562691).

12010012220221 is an equidigital number, since it uses as much as digits as its factorization.

12010012220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7562690.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12010012220221 its reverse (12202221001021), we get a palindrome (24212233221242).

The spelling of 12010012220221 in words is "twelve trillion, ten billion, twelve million, two hundred twenty thousand, two hundred twenty-one".