20111101101 has 96 divisors (see below), whose sum is σ = 37617285888. Its totient is φ = 10068986880.

The previous prime is 20111101069. The next prime is 20111101103. The reversal of 20111101101 is 10110111102.

It is not a de Polignac number, because 20111101101 - 2⁵ = 20111101069 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 (20111101103) 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 95 ways as a sum of consecutive naturals, for example, 1234330 + ... + 1250516.

It is an arithmetic number, because the mean of its divisors is an integer number (391846728).

Almost surely, 2^20111101101 is an apocalyptic number.

20111101101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20111101101 is a deficient number, since it is larger than the sum of its proper divisors (17506184787).

20111101101 is a wasteful number, since it uses less digits than its factorization.

20111101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16291 (or 16288 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 20111101101 its reverse (10110111102), we get a palindrome (30221212203).

The spelling of 20111101101 in words is "twenty billion, one hundred eleven million, one hundred one thousand, one hundred one".