22112221212211 has 4 divisors (see below), whose sum is σ = 23813161305472. Its totient is φ = 20411281118952.

The previous prime is 22112221212209. The next prime is 22112221212259. The reversal of 22112221212211 is 11221212221122.

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 22112221212211 - 2¹ = 22112221212209 is a prime.

It is a super-3 number, since 3×22112221212211³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112221212281) 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, 850470046611 + ... + 850470046636.

It is an arithmetic number, because the mean of its divisors is an integer number (5953290326368).

Almost surely, 2^{22112221212211} is an apocalyptic number.

22112221212211 is a deficient number, since it is larger than the sum of its proper divisors (1700940093261).

22112221212211 is a wasteful number, since it uses less digits than its factorization.

22112221212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700940093260.

The product of its digits is 256, while the sum is 22.

Adding to 22112221212211 its reverse (11221212221122), we get a palindrome (33333433433333).

The spelling of 22112221212211 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred eleven".