21110100101011 has 2 divisors, whose sum is σ = 21110100101012. Its totient is φ = 21110100101010.

The previous prime is 21110100100993. The next prime is 21110100101131. The reversal of 21110100101011 is 11010100101112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110100101011 - 2¹³ = 21110100092819 is a prime.

It is not a weakly prime, because it can be changed into another prime (21110100131011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555050050505 + 10555050050506.

It is an arithmetic number, because the mean of its divisors is an integer number (10555050050506).

Almost surely, 2^{21110100101011} is an apocalyptic number.

21110100101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110100101011 is an equidigital number, since it uses as much as digits as its factorization.

21110100101011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 21110100101011 its reverse (11010100101112), we get a palindrome (32120200202123).

The spelling of 21110100101011 in words is "twenty-one trillion, one hundred ten billion, one hundred million, one hundred one thousand, eleven".