21200221120011 has 8 divisors (see below), whose sum is σ = 28266994814784. Its totient is φ = 14133464085960.

The previous prime is 21200221120007. The next prime is 21200221120021. The reversal of 21200221120011 is 11002112200212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21200221120011 - 2² = 21200221120007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200221120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809985 + ... + 6561746.

It is an arithmetic number, because the mean of its divisors is an integer number (3533374351848).

Almost surely, 2^{21200221120011} is an apocalyptic number.

21200221120011 is a deficient number, since it is larger than the sum of its proper divisors (7066773694773).

21200221120011 is an equidigital number, since it uses as much as digits as its factorization.

21200221120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8330361.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21200221120011 its reverse (11002112200212), we get a palindrome (32202333320223).

The spelling of 21200221120011 in words is "twenty-one trillion, two hundred billion, two hundred twenty-one million, one hundred twenty thousand, eleven".