21222120210011 has 8 divisors (see below), whose sum is σ = 24254740859904. Its totient is φ = 18189721857960.

The previous prime is 21222120209981. The next prime is 21222120210037. The reversal of 21222120210011 is 11001202122212.

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

It is a cyclic number.

It is not a de Polignac number, because 21222120210011 - 2³⁴ = 21204940340827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222120410011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55369835 + ... + 55751796.

It is an arithmetic number, because the mean of its divisors is an integer number (3031842607488).

Almost surely, 2^{21222120210011} is an apocalyptic number.

21222120210011 is a deficient number, since it is larger than the sum of its proper divisors (3032620649893).

21222120210011 is a wasteful number, since it uses less digits than its factorization.

21222120210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111148921.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222120210011 its reverse (11001202122212), we get a palindrome (32223322332223).

The spelling of 21222120210011 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, eleven".