112172503198821 has 32 divisors (see below), whose sum is σ = 163579478291712. Its totient is φ = 67955864094720.

The previous prime is 112172503198801. The next prime is 112172503198831. The reversal of 112172503198821 is 128891305271211.

It is a de Polignac number, because none of the positive numbers 2^k-112172503198821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112172503198801) 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, 28233130 + ... + 31960203.

It is an arithmetic number, because the mean of its divisors is an integer number (5111858696616).

Almost surely, 2^{112172503198821} is an apocalyptic number.

It is an amenable number.

112172503198821 is a deficient number, since it is larger than the sum of its proper divisors (51406975092891).

112172503198821 is a wasteful number, since it uses less digits than its factorization.

112172503198821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60194093.

The product of its (nonzero) digits is 483840, while the sum is 51.

The spelling of 112172503198821 in words is "one hundred twelve trillion, one hundred seventy-two billion, five hundred three million, one hundred ninety-eight thousand, eight hundred twenty-one".