20001011001193 has 8 divisors (see below), whose sum is σ = 20199223194696. Its totient is φ = 19802802384000.

The previous prime is 20001011001173. The next prime is 20001011001217. The reversal of 20001011001193 is 39110011010002.

It can be written as a sum of positive squares in 4 ways, for example, as 16262403132889 + 3738607868304 = 4032667^2 + 1933548^2 .

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 20001011001193 - 2³⁷ = 19863572047721 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 20001011001193.

It is not an unprimeable number, because it can be changed into a prime (20001011001173) 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, 11146005 + ... + 12815437.

It is an arithmetic number, because the mean of its divisors is an integer number (2524902899337).

Almost surely, 2^{20001011001193} is an apocalyptic number.

It is an amenable number.

20001011001193 is a deficient number, since it is larger than the sum of its proper divisors (198212193503).

20001011001193 is a wasteful number, since it uses less digits than its factorization.

20001011001193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788155.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 20001011001193 its reverse (39110011010002), we get a palindrome (59111022011195).

The spelling of 20001011001193 in words is "twenty trillion, one billion, eleven million, one thousand, one hundred ninety-three".