20113210001 has 2 divisors, whose sum is σ = 20113210002. Its totient is φ = 20113210000.

The previous prime is 20113209997. The next prime is 20113210009. The reversal of 20113210001 is 10001231102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19488160000 + 625050001 = 139600^2 + 25001^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113210001 - 2² = 20113209997 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113210009) 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, 10056605000 + 10056605001.

It is an arithmetic number, because the mean of its divisors is an integer number (10056605001).

Almost surely, 2^20113210001 is an apocalyptic number.

It is an amenable number.

20113210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113210001 is an equidigital number, since it uses as much as digits as its factorization.

20113210001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20113210001 its reverse (10001231102), we get a palindrome (30114441103).

The spelling of 20113210001 in words is "twenty billion, one hundred thirteen million, two hundred ten thousand, one".