20120011101 has 12 divisors (see below), whose sum is σ = 29284089120. Its totient is φ = 13310948040.

The previous prime is 20120011099. The next prime is 20120011111. The reversal of 20120011101 is 10111002102.

It is a happy number.

It is not a de Polignac number, because 20120011101 - 2¹ = 20120011099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120011111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8531481 + ... + 8533838.

It is an arithmetic number, because the mean of its divisors is an integer number (2440340760).

Almost surely, 2^20120011101 is an apocalyptic number.

It is an amenable number.

20120011101 is a deficient number, since it is larger than the sum of its proper divisors (9164078019).

20120011101 is a wasteful number, since it uses less digits than its factorization.

20120011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17065456 (or 17065453 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20120011101 its reverse (10111002102), we get a palindrome (30231013203).

It can be divided in two parts, 2012001 and 1101, that added together give a palindrome (2013102).

The spelling of 20120011101 in words is "twenty billion, one hundred twenty million, eleven thousand, one hundred one".