22198147 has 4 divisors (see below), whose sum is σ = 22670496. Its totient is φ = 21725800.

The previous prime is 22198129. The next prime is 22198193. The reversal of 22198147 is 74189122.

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 22198147 - 2¹¹ = 22196099 is a prime.

It is a super-3 number, since 3×22198147³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22198117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236104 + ... + 236197.

It is an arithmetic number, because the mean of its divisors is an integer number (5667624).

Almost surely, 2^22198147 is an apocalyptic number.

22198147 is a deficient number, since it is larger than the sum of its proper divisors (472349).

22198147 is an equidigital number, since it uses as much as digits as its factorization.

22198147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472348.

The product of its digits is 8064, while the sum is 34.

The square root of 22198147 is about 4711.4909529787. The cubic root of 22198147 is about 281.0426559359.

The spelling of 22198147 in words is "twenty-two million, one hundred ninety-eight thousand, one hundred forty-seven".