20111001201011 has 24 divisors (see below), whose sum is σ = 23548965801984. Its totient is φ = 17124491202000.

The previous prime is 20111001200971. The next prime is 20111001201029. The reversal of 20111001201011 is 11010210011102.

It is not a de Polignac number, because 20111001201011 - 2¹⁰ = 20111001199987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111001200983 and 20111001201001.

It is not an unprimeable number, because it can be changed into a prime (20111001201091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2575826 + ... + 6845208.

It is an arithmetic number, because the mean of its divisors is an integer number (981206908416).

Almost surely, 2^{20111001201011} is an apocalyptic number.

20111001201011 is a deficient number, since it is larger than the sum of its proper divisors (3437964600973).

20111001201011 is a wasteful number, since it uses less digits than its factorization.

20111001201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270031 (or 4270024 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20111001201011 its reverse (11010210011102), we get a palindrome (31121211212113).

The spelling of 20111001201011 in words is "twenty trillion, one hundred eleven billion, one million, two hundred one thousand, eleven".