199232121100031 has 4 divisors (see below), whose sum is σ = 199757799520200. Its totient is φ = 198706442679864.

The previous prime is 199232121100021. The next prime is 199232121100079. The reversal of 199232121100031 is 130001121232991.

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 199232121100031 - 2⁶ = 199232121099967 is a prime.

It is a super-2 number, since 2×199232121100031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199232121099964 and 199232121100000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199232121100021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262839209516 + ... + 262839210273.

It is an arithmetic number, because the mean of its divisors is an integer number (49939449880050).

Almost surely, 2^{199232121100031} is an apocalyptic number.

199232121100031 is a deficient number, since it is larger than the sum of its proper divisors (525678420169).

199232121100031 is an equidigital number, since it uses as much as digits as its factorization.

199232121100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525678420168.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 199232121100031 in words is "one hundred ninety-nine trillion, two hundred thirty-two billion, one hundred twenty-one million, one hundred thousand, thirty-one".