20227199 has 4 divisors (see below), whose sum is σ = 20236200. Its totient is φ = 20218200.

The previous prime is 20227133. The next prime is 20227217. The reversal of 20227199 is 99172202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99172202 = 2 ⋅49586101.

It is a cyclic number.

It is not a de Polignac number, because 20227199 - 2¹² = 20223103 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 (20287199) 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, 2024 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (5059050).

Almost surely, 2^20227199 is an apocalyptic number.

20227199 is a deficient number, since it is larger than the sum of its proper divisors (9001).

20227199 is an equidigital number, since it uses as much as digits as its factorization.

20227199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 20227199 is about 4497.4658420048. The cubic root of 20227199 is about 272.4657488584.

The spelling of 20227199 in words is "twenty million, two hundred twenty-seven thousand, one hundred ninety-nine".