22012212211 has 4 divisors (see below), whose sum is σ = 24013322424. Its totient is φ = 20011102000.

The previous prime is 22012212199. The next prime is 22012212217. The reversal of 22012212211 is 11221221022.

It is a happy number.

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 22012212211 - 2⁵ = 22012212179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012212217) 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, 1000555090 + ... + 1000555111.

It is an arithmetic number, because the mean of its divisors is an integer number (6003330606).

Almost surely, 2^22012212211 is an apocalyptic number.

22012212211 is a deficient number, since it is larger than the sum of its proper divisors (2001110213).

22012212211 is a wasteful number, since it uses less digits than its factorization.

22012212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001110212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22012212211 its reverse (11221221022), we get a palindrome (33233433233).

The spelling of 22012212211 in words is "twenty-two billion, twelve million, two hundred twelve thousand, two hundred eleven".