212102010221201 has 2 divisors, whose sum is σ = 212102010221202. Its totient is φ = 212102010221200.

The previous prime is 212102010221149. The next prime is 212102010221251. The reversal of 212102010221201 is 102122010201212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176827628499025 + 35274381722176 = 13297655^2 + 5939224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102010221201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212102010221201.

It is not a weakly prime, because it can be changed into another prime (212102010221251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051005110600 + 106051005110601.

It is an arithmetic number, because the mean of its divisors is an integer number (106051005110601).

Almost surely, 2^{212102010221201} is an apocalyptic number.

It is an amenable number.

212102010221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102010221201 is an equidigital number, since it uses as much as digits as its factorization.

212102010221201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212102010221201 its reverse (102122010201212), we get a palindrome (314224020422413).

The spelling of 212102010221201 in words is "two hundred twelve trillion, one hundred two billion, ten million, two hundred twenty-one thousand, two hundred one".