199951051111101 has 12 divisors (see below), whose sum is σ = 289838743899328. Its totient is φ = 132829673527944.

The previous prime is 199951051111043. The next prime is 199951051111127. The reversal of 199951051111101 is 101111150159991.

It is a happy number.

199951051111101 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 5 + 10 + 511 + 1 + 110 + 1 = 666.

It is not a de Polignac number, because 199951051111101 - 2¹⁰ = 199951051110077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199951051111171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39252265045 + ... + 39252270138.

Almost surely, 2^{199951051111101} is an apocalyptic number.

It is an amenable number.

199951051111101 is a deficient number, since it is larger than the sum of its proper divisors (89887692788227).

199951051111101 is a wasteful number, since it uses less digits than its factorization.

199951051111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78504535472 (or 78504535469 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 45.

The spelling of 199951051111101 in words is "one hundred ninety-nine trillion, nine hundred fifty-one billion, fifty-one million, one hundred eleven thousand, one hundred one".