20312640200011 has 2 divisors, whose sum is σ = 20312640200012. Its totient is φ = 20312640200010.

The previous prime is 20312640199981. The next prime is 20312640200033. The reversal of 20312640200011 is 11000204621302.

It is an a-pointer prime, because the next prime (20312640200033) can be obtained adding 20312640200011 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20312640200011 - 2²³ = 20312631811403 is a prime.

It is not a weakly prime, because it can be changed into another prime (20312640200911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156320100005 + 10156320100006.

It is an arithmetic number, because the mean of its divisors is an integer number (10156320100006).

Almost surely, 2^{20312640200011} is an apocalyptic number.

20312640200011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312640200011 is an equidigital number, since it uses as much as digits as its factorization.

20312640200011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20312640200011 its reverse (11000204621302), we get a palindrome (31312844821313).

The spelling of 20312640200011 in words is "twenty trillion, three hundred twelve billion, six hundred forty million, two hundred thousand, eleven".