20211100110011 has 2 divisors, whose sum is σ = 20211100110012. Its totient is φ = 20211100110010.

The previous prime is 20211100109983. The next prime is 20211100110041. The reversal of 20211100110011 is 11001100111202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211100110011 - 2¹⁸ = 20211099847867 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211100109974 and 20211100110001.

It is not a weakly prime, because it can be changed into another prime (20211100110041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105550055005 + 10105550055006.

It is an arithmetic number, because the mean of its divisors is an integer number (10105550055006).

Almost surely, 2^{20211100110011} is an apocalyptic number.

20211100110011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211100110011 is an equidigital number, since it uses as much as digits as its factorization.

20211100110011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20211100110011 its reverse (11001100111202), we get a palindrome (31212200221213).

The spelling of 20211100110011 in words is "twenty trillion, two hundred eleven billion, one hundred million, one hundred ten thousand, eleven".