211230112021 has 2 divisors, whose sum is σ = 211230112022. Its totient is φ = 211230112020.

The previous prime is 211230112003. The next prime is 211230112031. The reversal of 211230112021 is 120211032112.

211230112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194270259121 + 16959852900 = 440761^2 + 130230^2 .

It is a cyclic number.

It is not a de Polignac number, because 211230112021 - 2⁷ = 211230111893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211230111986 and 211230112004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211230112031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615056010 + 105615056011.

It is an arithmetic number, because the mean of its divisors is an integer number (105615056011).

Almost surely, 2^211230112021 is an apocalyptic number.

It is an amenable number.

211230112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211230112021 is an equidigital number, since it uses as much as digits as its factorization.

211230112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 211230112021 its reverse (120211032112), we get a palindrome (331441144133).

The spelling of 211230112021 in words is "two hundred eleven billion, two hundred thirty million, one hundred twelve thousand, twenty-one".