212300201021 has 2 divisors, whose sum is σ = 212300201022. Its totient is φ = 212300201020.

The previous prime is 212300200999. The next prime is 212300201041. The reversal of 212300201021 is 120102003212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186269928100 + 26030272921 = 431590^2 + 161339^2 .

It is a cyclic number.

It is not a de Polignac number, because 212300201021 - 2²⁶ = 212233092157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212300200987 and 212300201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212300201041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106150100510 + 106150100511.

It is an arithmetic number, because the mean of its divisors is an integer number (106150100511).

Almost surely, 2^212300201021 is an apocalyptic number.

It is an amenable number.

212300201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

212300201021 is an equidigital number, since it uses as much as digits as its factorization.

212300201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 212300201021 its reverse (120102003212), we get a palindrome (332402204233).

The spelling of 212300201021 in words is "two hundred twelve billion, three hundred million, two hundred one thousand, twenty-one".