20211022199 has 4 divisors (see below), whose sum is σ = 20227964736. Its totient is φ = 20194079664.

The previous prime is 20211022177. The next prime is 20211022207. The reversal of 20211022199 is 99122011202.

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 20211022199 - 2¹⁶ = 20210956663 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 (20211022129) 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, 8469479 + ... + 8471864.

It is an arithmetic number, because the mean of its divisors is an integer number (5056991184).

Almost surely, 2^20211022199 is an apocalyptic number.

20211022199 is a deficient number, since it is larger than the sum of its proper divisors (16942537).

20211022199 is a wasteful number, since it uses less digits than its factorization.

20211022199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16942536.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 20211022199 in words is "twenty billion, two hundred eleven million, twenty-two thousand, one hundred ninety-nine".