20212201001 has 2 divisors, whose sum is σ = 20212201002. Its totient is φ = 20212201000.

The previous prime is 20212200959. The next prime is 20212201019. The reversal of 20212201001 is 10010221202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15426882025 + 4785318976 = 124205^2 + 69176^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212201001 - 2²⁶ = 20145092137 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 (20212201201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106100500 + 10106100501.

It is an arithmetic number, because the mean of its divisors is an integer number (10106100501).

Almost surely, 2^20212201001 is an apocalyptic number.

It is an amenable number.

20212201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212201001 is an equidigital number, since it uses as much as digits as its factorization.

20212201001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20212201001 its reverse (10010221202), we get a palindrome (30222422203).

It can be divided in two parts, 2021 and 2201001, that added together give a palindrome (2203022).

The spelling of 20212201001 in words is "twenty billion, two hundred twelve million, two hundred one thousand, one".