199224422991 has 32 divisors (see below), whose sum is σ = 322249328640. Its totient is φ = 120640651200.

The previous prime is 199224422977. The next prime is 199224423001.

199224422991 is a `hidden beast` number, since 1 + 9 + 92 + 2 + 442 + 29 + 91 = 666.

199224422991 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 199224422991 - 2⁶ = 199224422927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199224422911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73186 + ... + 635456.

It is an arithmetic number, because the mean of its divisors is an integer number (10070291520).

Almost surely, 2^199224422991 is an apocalyptic number.

199224422991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

199224422991 is a deficient number, since it is larger than the sum of its proper divisors (123024905649).

199224422991 is a wasteful number, since it uses less digits than its factorization.

199224422991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563484 (or 563478 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 199224422991 in words is "one hundred ninety-nine billion, two hundred twenty-four million, four hundred twenty-two thousand, nine hundred ninety-one".