21010012022011 has 2 divisors, whose sum is σ = 21010012022012. Its totient is φ = 21010012022010.

The previous prime is 21010012021997. The next prime is 21010012022033. The reversal of 21010012022011 is 11022021001012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21010012022011 - 2²⁵ = 21009978467579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21010012021982 and 21010012022000.

It is not a weakly prime, because it can be changed into another prime (21010012022071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505006011005 + 10505006011006.

It is an arithmetic number, because the mean of its divisors is an integer number (10505006011006).

Almost surely, 2^{21010012022011} is an apocalyptic number.

21010012022011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010012022011 is an equidigital number, since it uses as much as digits as its factorization.

21010012022011 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 13.

Adding to 21010012022011 its reverse (11022021001012), we get a palindrome (32032033023023).

The spelling of 21010012022011 in words is "twenty-one trillion, ten billion, twelve million, twenty-two thousand, eleven".