1000213230221 has 2 divisors, whose sum is σ = 1000213230222. Its totient is φ = 1000213230220.

The previous prime is 1000213230209. The next prime is 1000213230251. The reversal of 1000213230221 is 1220323120001.

1000213230221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625461121321 + 374752108900 = 790861^2 + 612170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000213230221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000213230221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000213230251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500106615110 + 500106615111.

It is an arithmetic number, because the mean of its divisors is an integer number (500106615111).

Almost surely, 2^{1000213230221} is an apocalyptic number.

It is an amenable number.

1000213230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000213230221 is an equidigital number, since it uses as much as digits as its factorization.

1000213230221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1000213230221 its reverse (1220323120001), we get a palindrome (2220536350222).

The spelling of 1000213230221 in words is "one trillion, two hundred thirteen million, two hundred thirty thousand, two hundred twenty-one".