21112020222113 has 2 divisors, whose sum is σ = 21112020222114. Its totient is φ = 21112020222112.

The previous prime is 21112020222071. The next prime is 21112020222179. The reversal of 21112020222113 is 31122202021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20376846021184 + 735174200929 = 4514072^2 + 857423^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112020222113 - 2¹⁴ = 21112020205729 is a prime.

It is not a weakly prime, because it can be changed into another prime (21112022222113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556010111056 + 10556010111057.

It is an arithmetic number, because the mean of its divisors is an integer number (10556010111057).

Almost surely, 2^{21112020222113} is an apocalyptic number.

It is an amenable number.

21112020222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112020222113 is an equidigital number, since it uses as much as digits as its factorization.

21112020222113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21112020222113 its reverse (31122202021112), we get a palindrome (52234222243225).

The spelling of 21112020222113 in words is "twenty-one trillion, one hundred twelve billion, twenty million, two hundred twenty-two thousand, one hundred thirteen".