21112201130101 has 2 divisors, whose sum is σ = 21112201130102. Its totient is φ = 21112201130100.

The previous prime is 21112201130093. The next prime is 21112201130113. The reversal of 21112201130101 is 10103110221112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17151185677201 + 3961015452900 = 4141399^2 + 1990230^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112201130101 - 2³ = 21112201130093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112201130161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556100565050 + 10556100565051.

It is an arithmetic number, because the mean of its divisors is an integer number (10556100565051).

Almost surely, 2^{21112201130101} is an apocalyptic number.

It is an amenable number.

21112201130101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112201130101 is an equidigital number, since it uses as much as digits as its factorization.

21112201130101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21112201130101 its reverse (10103110221112), we get a palindrome (31215311351213).

The spelling of 21112201130101 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred thirty thousand, one hundred one".