21202100199 has 48 divisors (see below), whose sum is σ = 35421448192. Its totient is φ = 11970249984.

The previous prime is 21202100197. The next prime is 21202100207. The reversal of 21202100199 is 99100120212.

It is not a de Polignac number, because 21202100199 - 2¹ = 21202100197 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 (21202100197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3000879 + ... + 3007935.

Almost surely, 2^21202100199 is an apocalyptic number.

21202100199 is a deficient number, since it is larger than the sum of its proper divisors (14219347993).

21202100199 is a wasteful number, since it uses less digits than its factorization.

21202100199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7636 (or 7633 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 21202100199 in words is "twenty-one billion, two hundred two million, one hundred thousand, one hundred ninety-nine".