212004402101 has 2 divisors, whose sum is σ = 212004402102. Its totient is φ = 212004402100.

The previous prime is 212004402089. The next prime is 212004402191. The reversal of 212004402101 is 101204400212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192523500625 + 19480901476 = 438775^2 + 139574^2 .

It is a cyclic number.

It is not a de Polignac number, because 212004402101 - 2¹⁸ = 212004139957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212004402101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212004402191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106002201050 + 106002201051.

It is an arithmetic number, because the mean of its divisors is an integer number (106002201051).

Almost surely, 2^212004402101 is an apocalyptic number.

It is an amenable number.

212004402101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212004402101 is an equidigital number, since it uses as much as digits as its factorization.

212004402101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212004402101 its reverse (101204400212), we get a palindrome (313208802313).

The spelling of 212004402101 in words is "two hundred twelve billion, four million, four hundred two thousand, one hundred one".