12012120222221 has 8 divisors (see below), whose sum is σ = 13748237164224. Its totient is φ = 10281028222080.

The previous prime is 12012120222161. The next prime is 12012120222233. The reversal of 12012120222221 is 12222202121021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12012120222221 - 2¹⁰ = 12012120221197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012120222193 and 12012120222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012120222251) 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, 1256230340 + ... + 1256239901.

It is an arithmetic number, because the mean of its divisors is an integer number (1718529645528).

Almost surely, 2^{12012120222221} is an apocalyptic number.

It is an amenable number.

12012120222221 is a deficient number, since it is larger than the sum of its proper divisors (1736116942003).

12012120222221 is an equidigital number, since it uses as much as digits as its factorization.

12012120222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512470931.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12012120222221 its reverse (12222202121021), we get a palindrome (24234322343242).

The spelling of 12012120222221 in words is "twelve trillion, twelve billion, one hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".