21112112020201 has 16 divisors (see below), whose sum is σ = 21670549626880. Its totient is φ = 20556753330960.

The previous prime is 21112112020163. The next prime is 21112112020249. The reversal of 21112112020201 is 10202021121112.

It is a cyclic number.

It is not a de Polignac number, because 21112112020201 - 2⁹ = 21112112019689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112112029201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151355176 + ... + 151494598.

It is an arithmetic number, because the mean of its divisors is an integer number (1354409351680).

Almost surely, 2^{21112112020201} is an apocalyptic number.

It is an amenable number.

21112112020201 is a deficient number, since it is larger than the sum of its proper divisors (558437606679).

21112112020201 is a wasteful number, since it uses less digits than its factorization.

21112112020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150436.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112112020201 its reverse (10202021121112), we get a palindrome (31314133141313).

The spelling of 21112112020201 in words is "twenty-one trillion, one hundred twelve billion, one hundred twelve million, twenty thousand, two hundred one".