21222120201011 has 8 divisors (see below), whose sum is σ = 21233826049920. Its totient is φ = 21210414781248.

The previous prime is 21222120200993. The next prime is 21222120201031. The reversal of 21222120201011 is 11010202122212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222120201011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222120201031) 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, 196052975 + ... + 196161191.

It is an arithmetic number, because the mean of its divisors is an integer number (2654228256240).

Almost surely, 2^{21222120201011} is an apocalyptic number.

21222120201011 is a deficient number, since it is larger than the sum of its proper divisors (11705848909).

21222120201011 is a wasteful number, since it uses less digits than its factorization.

21222120201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214573.

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

Adding to 21222120201011 its reverse (11010202122212), we get a palindrome (32232322323223).

The spelling of 21222120201011 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred one thousand, eleven".