199272375121 has 2 divisors, whose sum is σ = 199272375122. Its totient is φ = 199272375120.

The previous prime is 199272375101. The next prime is 199272375161. The reversal of 199272375121 is 121573272991.

199272375121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105599651521 + 93672723600 = 324961^2 + 306060^2 .

It is a cyclic number.

It is not a de Polignac number, because 199272375121 - 2¹⁷ = 199272244049 is a prime.

It is not a weakly prime, because it can be changed into another prime (199272375101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99636187560 + 99636187561.

It is an arithmetic number, because the mean of its divisors is an integer number (99636187561).

Almost surely, 2^199272375121 is an apocalyptic number.

It is an amenable number.

199272375121 is a deficient number, since it is larger than the sum of its proper divisors (1).

199272375121 is an equidigital number, since it uses as much as digits as its factorization.

199272375121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

It can be divided in two parts, 1992723 and 75121, that added together give a square (2067844 = 1438²).

The spelling of 199272375121 in words is "one hundred ninety-nine billion, two hundred seventy-two million, three hundred seventy-five thousand, one hundred twenty-one".