22021110111211 has 4 divisors (see below), whose sum is σ = 22021295003800. Its totient is φ = 22020925218624.

The previous prime is 22021110111157. The next prime is 22021110111227. The reversal of 22021110111211 is 11211101112022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22021110111211 - 2¹⁷ = 22021109980139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021110111241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92267526 + ... + 92505883.

It is an arithmetic number, because the mean of its divisors is an integer number (5505323750950).

Almost surely, 2^{22021110111211} is an apocalyptic number.

22021110111211 is a deficient number, since it is larger than the sum of its proper divisors (184892589).

22021110111211 is a wasteful number, since it uses less digits than its factorization.

22021110111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184892588.

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

Adding to 22021110111211 its reverse (11211101112022), we get a palindrome (33232211223233).

The spelling of 22021110111211 in words is "twenty-two trillion, twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred eleven".