20011012101111 has 8 divisors (see below), whose sum is σ = 27133575730560. Its totient is φ = 13114561602872.

The previous prime is 20011012101107. The next prime is 20011012101149. The reversal of 20011012101111 is 11110121011002.

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 20011012101111 - 2² = 20011012101107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011012101811) 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, 56528282595 + ... + 56528282948.

It is an arithmetic number, because the mean of its divisors is an integer number (3391696966320).

Almost surely, 2^{20011012101111} is an apocalyptic number.

20011012101111 is a deficient number, since it is larger than the sum of its proper divisors (7122563629449).

20011012101111 is a wasteful number, since it uses less digits than its factorization.

20011012101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113056565605.

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

Adding to 20011012101111 its reverse (11110121011002), we get a palindrome (31121133112113).

The spelling of 20011012101111 in words is "twenty trillion, eleven billion, twelve million, one hundred one thousand, one hundred eleven".