21120211199 has 8 divisors (see below), whose sum is σ = 21181505280. Its totient is φ = 21058997976.

The previous prime is 21120211193. The next prime is 21120211201. The reversal of 21120211199 is 99111202112.

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

It is a cyclic number.

It is not a de Polignac number, because 21120211199 - 2⁴ = 21120211183 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 (21120211193) 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 7 ways as a sum of consecutive naturals, for example, 523964 + ... + 562830.

It is an arithmetic number, because the mean of its divisors is an integer number (2647688160).

Almost surely, 2^21120211199 is an apocalyptic number.

21120211199 is a deficient number, since it is larger than the sum of its proper divisors (61294081).

21120211199 is a wasteful number, since it uses less digits than its factorization.

21120211199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40429.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 21120211199 in words is "twenty-one billion, one hundred twenty million, two hundred eleven thousand, one hundred ninety-nine".