20211002021201 has 2 divisors, whose sum is σ = 20211002021202. Its totient is φ = 20211002021200.

The previous prime is 20211002021179. The next prime is 20211002021261. The reversal of 20211002021201 is 10212020011202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20207182657600 + 3819363601 = 4495240^2 + 61801^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211002021201 - 2⁶ = 20211002021137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20211002021261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105501010600 + 10105501010601.

It is an arithmetic number, because the mean of its divisors is an integer number (10105501010601).

Almost surely, 2^{20211002021201} is an apocalyptic number.

It is an amenable number.

20211002021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211002021201 is an equidigital number, since it uses as much as digits as its factorization.

20211002021201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20211002021201 its reverse (10212020011202), we get a palindrome (30423022032403).

The spelling of 20211002021201 in words is "twenty trillion, two hundred eleven billion, two million, twenty-one thousand, two hundred one".