199505146122 has 16 divisors (see below), whose sum is σ = 443344769280. Its totient is φ = 66501715356.

The previous prime is 199505146109. The next prime is 199505146189. The reversal of 199505146122 is 221641505991.

199505146122 is a `hidden beast` number, since 1 + 9 + 9 + 5 + 0 + 514 + 6 + 122 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1847269818 + ... + 1847269925.

It is an arithmetic number, because the mean of its divisors is an integer number (27709048080).

Almost surely, 2^199505146122 is an apocalyptic number.

199505146122 is an abundant number, since it is smaller than the sum of its proper divisors (243839623158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199505146122 is a wasteful number, since it uses less digits than its factorization.

199505146122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3694539754 (or 3694539748 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 199505146122 in words is "one hundred ninety-nine billion, five hundred five million, one hundred forty-six thousand, one hundred twenty-two".