12200121988 has 6 divisors (see below), whose sum is σ = 21350213486. Its totient is φ = 6100060992.

The previous prime is 12200121971. The next prime is 12200122003. The reversal of 12200121988 is 88912100221.

12200121988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12184185924 + 15936064 = 110382^2 + 3992^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1525015245 + ... + 1525015252.

Almost surely, 2^12200121988 is an apocalyptic number.

It is an amenable number.

12200121988 is a deficient number, since it is larger than the sum of its proper divisors (9150091498).

12200121988 is a wasteful number, since it uses less digits than its factorization.

12200121988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050030501 (or 3050030499 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 12200121988 in words is "twelve billion, two hundred million, one hundred twenty-one thousand, nine hundred eighty-eight".