21211202199 has 32 divisors (see below), whose sum is σ = 32231743488. Its totient is φ = 12290652000.

The previous prime is 21211202189. The next prime is 21211202219. The reversal of 21211202199 is 99120211212.

It is not a de Polignac number, because 21211202199 - 2¹¹ = 21211200151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211202119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39997 + ... + 209814.

It is an arithmetic number, because the mean of its divisors is an integer number (1007241984).

Almost surely, 2^21211202199 is an apocalyptic number.

21211202199 is a deficient number, since it is larger than the sum of its proper divisors (11020541289).

21211202199 is a wasteful number, since it uses less digits than its factorization.

21211202199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249939.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 21211202199 in words is "twenty-one billion, two hundred eleven million, two hundred two thousand, one hundred ninety-nine".