20111120212101 has 8 divisors (see below), whose sum is σ = 26814852128064. Its totient is φ = 13407400885440.

The previous prime is 20111120212087. The next prime is 20111120212109. The reversal of 20111120212101 is 10121202111102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20111120212101 - 2¹¹ = 20111120210053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111120212109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605421 + ... + 6542141.

It is an arithmetic number, because the mean of its divisors is an integer number (3351856516008).

Almost surely, 2^{20111120212101} is an apocalyptic number.

It is an amenable number.

20111120212101 is a deficient number, since it is larger than the sum of its proper divisors (6703731915963).

20111120212101 is a wasteful number, since it uses less digits than its factorization.

20111120212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6294651.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111120212101 its reverse (10121202111102), we get a palindrome (30232322323203).

The spelling of 20111120212101 in words is "twenty trillion, one hundred eleven billion, one hundred twenty million, two hundred twelve thousand, one hundred one".