20211000199 has 4 divisors (see below), whose sum is σ = 21765692536. Its totient is φ = 18656307864.

The previous prime is 20211000193. The next prime is 20211000211. The reversal of 20211000199 is 99100011202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20211000199 - 2⁵ = 20211000167 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 (20211000193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777346149 + ... + 777346174.

It is an arithmetic number, because the mean of its divisors is an integer number (5441423134).

Almost surely, 2^20211000199 is an apocalyptic number.

20211000199 is a deficient number, since it is larger than the sum of its proper divisors (1554692337).

20211000199 is a wasteful number, since it uses less digits than its factorization.

20211000199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554692336.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 20211000199 in words is "twenty billion, two hundred eleven million, one hundred ninety-nine", and thus it is an aban number.