20111011021101 has 192 divisors, whose sum is σ = 37254352730112. Its totient is φ = 9484776000000.

The previous prime is 20111011021097. The next prime is 20111011021139. The reversal of 20111011021101 is 10112011011102.

It is not a de Polignac number, because 20111011021101 - 2² = 20111011021097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111011021141) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 320559906 + ... + 320622636.

It is an arithmetic number, because the mean of its divisors is an integer number (194033087136).

Almost surely, 2^{20111011021101} is an apocalyptic number.

20111011021101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20111011021101 is a deficient number, since it is larger than the sum of its proper divisors (17143341709011).

20111011021101 is a wasteful number, since it uses less digits than its factorization.

20111011021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63024 (or 63017 counting only the distinct ones).

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

Adding to 20111011021101 its reverse (10112011011102), we get a palindrome (30223022032203).

Subtracting from 20111011021101 its reverse (10112011011102), we obtain a palindrome (9999000009999).

It can be divided in two parts, 201110 and 11021101, that added together give a palindrome (11222211).

The spelling of 20111011021101 in words is "twenty trillion, one hundred eleven billion, eleven million, twenty-one thousand, one hundred one".