12222120221989 has 4 divisors (see below), whose sum is σ = 12334249765420. Its totient is φ = 12109990678560.

The previous prime is 12222120221977. The next prime is 12222120222017. The reversal of 12222120221989 is 98912202122221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4185944137764 + 8036176084225 = 2045958^2 + 2834815^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222120221989 - 2⁹ = 12222120221477 is a prime.

It is a super-2 number, since 2×12222120221989² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222120281989) 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, 56064771552 + ... + 56064771769.

It is an arithmetic number, because the mean of its divisors is an integer number (3083562441355).

Almost surely, 2^{12222120221989} is an apocalyptic number.

It is an amenable number.

12222120221989 is a deficient number, since it is larger than the sum of its proper divisors (112129543431).

12222120221989 is a wasteful number, since it uses less digits than its factorization.

12222120221989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112129543430.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 12222120221989 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, nine hundred eighty-nine".