2001101211993 has 8 divisors (see below), whose sum is σ = 2873376099328. Its totient is φ = 1231446899664.

The previous prime is 2001101211929. The next prime is 2001101211997. The reversal of 2001101211993 is 3991121011002.

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

It is not a de Polignac number, because 2001101211993 - 2⁶ = 2001101211929 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 2001101211993.

It is not an unprimeable number, because it can be changed into a prime (2001101211997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25655143705 + ... + 25655143782.

It is an arithmetic number, because the mean of its divisors is an integer number (359172012416).

Almost surely, 2^{2001101211993} is an apocalyptic number.

It is an amenable number.

2001101211993 is a deficient number, since it is larger than the sum of its proper divisors (872274887335).

2001101211993 is a wasteful number, since it uses less digits than its factorization.

2001101211993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51310287503.

The product of its (nonzero) digits is 972, while the sum is 30.

Adding to 2001101211993 its reverse (3991121011002), we get a palindrome (5992222222995).

The spelling of 2001101211993 in words is "two trillion, one billion, one hundred one million, two hundred eleven thousand, nine hundred ninety-three".