12199802021 has 16 divisors (see below), whose sum is σ = 14101216128. Its totient is φ = 10431321600.

The previous prime is 12199802011. The next prime is 12199802033. The reversal of 12199802021 is 12020899121.

12199802021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12199802021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12199802011) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 267401 + ... + 309681.

It is an arithmetic number, because the mean of its divisors is an integer number (881326008).

Almost surely, 2^12199802021 is an apocalyptic number.

12199802021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12199802021 is a deficient number, since it is larger than the sum of its proper divisors (1901414107).

12199802021 is a wasteful number, since it uses less digits than its factorization.

12199802021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43852.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 12199802021 in words is "twelve billion, one hundred ninety-nine million, eight hundred two thousand, twenty-one".