199921141 has 8 divisors (see below), whose sum is σ = 232792704. Its totient is φ = 168127440.

The previous prime is 199921133. The next prime is 199921153. The reversal of 199921141 is 141129991.

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 199921141 - 2³ = 199921133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199921141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199921181) 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, 269065 + ... + 269806.

It is an arithmetic number, because the mean of its divisors is an integer number (29099088).

Almost surely, 2^199921141 is an apocalyptic number.

It is an amenable number.

199921141 is a deficient number, since it is larger than the sum of its proper divisors (32871563).

199921141 is an equidigital number, since it uses as much as digits as its factorization.

199921141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538931.

The product of its digits is 5832, while the sum is 37.

The square root of 199921141 is about 14139.3472621617. The cubic root of 199921141 is about 584.7266758334.

The spelling of 199921141 in words is "one hundred ninety-nine million, nine hundred twenty-one thousand, one hundred forty-one".