201123109999 has 8 divisors (see below), whose sum is σ = 229862873088. Its totient is φ = 172385319480.

The previous prime is 201123109951. The next prime is 201123110051. The reversal of 201123109999 is 999901321102.

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 201123109999 - 2¹¹ = 201123107951 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 (201123109909) 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, 267787 + ... + 688444.

It is an arithmetic number, because the mean of its divisors is an integer number (28732859136).

Almost surely, 2^201123109999 is an apocalyptic number.

201123109999 is a deficient number, since it is larger than the sum of its proper divisors (28739763089).

201123109999 is an equidigital number, since it uses as much as digits as its factorization.

201123109999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986285.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 201123109999 in words is "two hundred one billion, one hundred twenty-three million, one hundred nine thousand, nine hundred ninety-nine".