20111011210011 has 32 divisors (see below), whose sum is σ = 26924690407680. Its totient is φ = 13352471754624.

The previous prime is 20111011209967. The next prime is 20111011210013. The reversal of 20111011210011 is 11001211011102.

It is not a de Polignac number, because 20111011210011 - 2²⁹ = 20110474339099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111011210013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2108288680 + ... + 2108298218.

It is an arithmetic number, because the mean of its divisors is an integer number (841396575240).

Almost surely, 2^{20111011210011} is an apocalyptic number.

20111011210011 is a deficient number, since it is larger than the sum of its proper divisors (6813679197669).

20111011210011 is a wasteful number, since it uses less digits than its factorization.

20111011210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12795.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20111011210011 its reverse (11001211011102), we get a palindrome (31112222221113).

The spelling of 20111011210011 in words is "twenty trillion, one hundred eleven billion, eleven million, two hundred ten thousand, eleven".