20212211111101 has 32 divisors (see below), whose sum is σ = 20947147296768. Its totient is φ = 19495660504320.

The previous prime is 20212211111077. The next prime is 20212211111117. The reversal of 20212211111101 is 10111111221202.

It is a cyclic number.

It is not a de Polignac number, because 20212211111101 - 2²¹ = 20212209013949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212211111801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 221125930 + ... + 221217316.

It is an arithmetic number, because the mean of its divisors is an integer number (654598353024).

Almost surely, 2^{20212211111101} is an apocalyptic number.

It is an amenable number.

20212211111101 is a deficient number, since it is larger than the sum of its proper divisors (734936185667).

20212211111101 is a wasteful number, since it uses less digits than its factorization.

20212211111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91921.

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

Adding to 20212211111101 its reverse (10111111221202), we get a palindrome (30323322332303).

The spelling of 20212211111101 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, one hundred eleven thousand, one hundred one".