199825623121 has 8 divisors (see below), whose sum is σ = 210443590080. Its totient is φ = 189217739088.

The previous prime is 199825623091. The next prime is 199825623131. The reversal of 199825623121 is 121326528991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199825623121 - 2⁹ = 199825622609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199825623131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480026 + ... + 2559331.

It is an arithmetic number, because the mean of its divisors is an integer number (26305448760).

Almost surely, 2^199825623121 is an apocalyptic number.

It is an amenable number.

199825623121 is a deficient number, since it is larger than the sum of its proper divisors (10617966959).

199825623121 is a wasteful number, since it uses less digits than its factorization.

199825623121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041463.

The product of its digits is 466560, while the sum is 49.

The spelling of 199825623121 in words is "one hundred ninety-nine billion, eight hundred twenty-five million, six hundred twenty-three thousand, one hundred twenty-one".