21200110220011 has 2 divisors, whose sum is σ = 21200110220012. Its totient is φ = 21200110220010.

The previous prime is 21200110219999. The next prime is 21200110220027. The reversal of 21200110220011 is 11002201100212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21200110220011 - 2¹⁷ = 21200110088939 is a prime.

It is a super-2 number, since 2×21200110220011² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200110219973 and 21200110220000.

It is not a weakly prime, because it can be changed into another prime (21200110221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600055110005 + 10600055110006.

It is an arithmetic number, because the mean of its divisors is an integer number (10600055110006).

Almost surely, 2^{21200110220011} is an apocalyptic number.

21200110220011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200110220011 is an equidigital number, since it uses as much as digits as its factorization.

21200110220011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21200110220011 its reverse (11002201100212), we get a palindrome (32202311320223).

The spelling of 21200110220011 in words is "twenty-one trillion, two hundred billion, one hundred ten million, two hundred twenty thousand, eleven".