12120222000221 has 4 divisors (see below), whose sum is σ = 12266248771392. Its totient is φ = 11974195229052.

The previous prime is 12120222000209. The next prime is 12120222000233. The reversal of 12120222000221 is 12200022202121.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (12120222000209) and next prime (12120222000233).

It is a cyclic number.

It is not a de Polignac number, because 12120222000221 - 2³⁸ = 11845344093277 is a prime.

It is a super-2 number, since 2×12120222000221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120222000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120222000241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73013385461 + ... + 73013385626.

It is an arithmetic number, because the mean of its divisors is an integer number (3066562192848).

Almost surely, 2^{12120222000221} is an apocalyptic number.

It is an amenable number.

12120222000221 is a deficient number, since it is larger than the sum of its proper divisors (146026771171).

12120222000221 is an equidigital number, since it uses as much as digits as its factorization.

12120222000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146026771170.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12120222000221 its reverse (12200022202121), we get a palindrome (24320244202342).

The spelling of 12120222000221 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.