20101120111101 has 16 divisors (see below), whose sum is σ = 26826909785984. Its totient is φ = 13388040474624.

The previous prime is 20101120111073. The next prime is 20101120111109. The reversal of 20101120111101 is 10111102110102.

It is not a de Polignac number, because 20101120111101 - 2¹³ = 20101120102909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101120111109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43690080 + ... + 44147766.

It is an arithmetic number, because the mean of its divisors is an integer number (1676681861624).

Almost surely, 2^{20101120111101} is an apocalyptic number.

It is an amenable number.

20101120111101 is a deficient number, since it is larger than the sum of its proper divisors (6725789674883).

20101120111101 is a wasteful number, since it uses less digits than its factorization.

20101120111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471540.

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

Adding to 20101120111101 its reverse (10111102110102), we get a palindrome (30212222221203).

The spelling of 20101120111101 in words is "twenty trillion, one hundred one billion, one hundred twenty million, one hundred eleven thousand, one hundred one".