21220112022011 has 8 divisors (see below), whose sum is σ = 25087817169120. Its totient is φ = 17561472018048.

The previous prime is 21220112021959. The next prime is 21220112022017. The reversal of 21220112022011 is 11022021102212.

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

It is a de Polignac number, because none of the positive numbers 2^k-21220112022011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220112022017) 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, 52266285566 + ... + 52266285971.

It is an arithmetic number, because the mean of its divisors is an integer number (3135977146140).

Almost surely, 2^{21220112022011} is an apocalyptic number.

21220112022011 is a deficient number, since it is larger than the sum of its proper divisors (3867705147109).

21220112022011 is a wasteful number, since it uses less digits than its factorization.

21220112022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104532571573.

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

Adding to 21220112022011 its reverse (11022021102212), we get a palindrome (32242133124223).

The spelling of 21220112022011 in words is "twenty-one trillion, two hundred twenty billion, one hundred twelve million, twenty-two thousand, eleven".