22021002111211 has 4 divisors (see below), whose sum is σ = 22489534071072. Its totient is φ = 21552470151352.

The previous prime is 22021002111209. The next prime is 22021002111253. The reversal of 22021002111211 is 11211120012022.

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 22021002111211 - 2¹ = 22021002111209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021000111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234265979860 + ... + 234265979953.

It is an arithmetic number, because the mean of its divisors is an integer number (5622383517768).

Almost surely, 2^{22021002111211} is an apocalyptic number.

22021002111211 is a deficient number, since it is larger than the sum of its proper divisors (468531959861).

22021002111211 is an equidigital number, since it uses as much as digits as its factorization.

22021002111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468531959860.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22021002111211 its reverse (11211120012022), we get a palindrome (33232122123233).

The spelling of 22021002111211 in words is "twenty-two trillion, twenty-one billion, two million, one hundred eleven thousand, two hundred eleven".