20111001011101 has 64 divisors (see below), whose sum is σ = 27187708133376. Its totient is φ = 14366313561600.

The previous prime is 20111001011093. The next prime is 20111001011117. The reversal of 20111001011101 is 10111010011102.

It is not a de Polignac number, because 20111001011101 - 2³ = 20111001011093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111001071101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117879606 + ... + 118050088.

It is an arithmetic number, because the mean of its divisors is an integer number (424807939584).

Almost surely, 2^{20111001011101} is an apocalyptic number.

It is an amenable number.

20111001011101 is a deficient number, since it is larger than the sum of its proper divisors (7076707122275).

20111001011101 is a wasteful number, since it uses less digits than its factorization.

20111001011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171322.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 20111001011101 its reverse (10111010011102), we get a palindrome (30222011022203).

Subtracting from 20111001011101 its reverse (10111010011102), we obtain a palindrome (9999990999999).

The spelling of 20111001011101 in words is "twenty trillion, one hundred eleven billion, one million, eleven thousand, one hundred one".