22221000111211 has 16 divisors (see below), whose sum is σ = 24652417144320. Its totient is φ = 19858150213920.

The previous prime is 22221000111197. The next prime is 22221000111301. The reversal of 22221000111211 is 11211100012222.

It is a cyclic number.

It is not a de Polignac number, because 22221000111211 - 2⁴³ = 13424907089003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221000111511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38015881 + ... + 38595973.

It is an arithmetic number, because the mean of its divisors is an integer number (1540776071520).

Almost surely, 2^{22221000111211} is an apocalyptic number.

22221000111211 is a deficient number, since it is larger than the sum of its proper divisors (2431417033109).

22221000111211 is a wasteful number, since it uses less digits than its factorization.

22221000111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639186.

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

Adding to 22221000111211 its reverse (11211100012222), we get a palindrome (33432100123433).

The spelling of 22221000111211 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred eleven thousand, two hundred eleven".