10021204221001 has 2 divisors, whose sum is σ = 10021204221002. Its totient is φ = 10021204221000.

The previous prime is 10021204220977. The next prime is 10021204221019. The reversal of 10021204221001 is 10012240212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8823276160000 + 1197928061001 = 2970400^2 + 1094499^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021204221001 - 2⁵ = 10021204220969 is a prime.

It is not a weakly prime, because it can be changed into another prime (10021204221401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010602110500 + 5010602110501.

It is an arithmetic number, because the mean of its divisors is an integer number (5010602110501).

Almost surely, 2^{10021204221001} is an apocalyptic number.

It is an amenable number.

10021204221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021204221001 is an equidigital number, since it uses as much as digits as its factorization.

10021204221001 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 16.

Adding to 10021204221001 its reverse (10012240212001), we get a palindrome (20033444433002).

The spelling of 10021204221001 in words is "ten trillion, twenty-one billion, two hundred four million, two hundred twenty-one thousand, one".