22222121011 has 4 divisors (see below), whose sum is σ = 22314329224. Its totient is φ = 22129912800.

The previous prime is 22222120997. The next prime is 22222121027. The reversal of 22222121011 is 11012122222.

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 22222121011 - 2⁷ = 22222120883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222121111) 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, 46103745 + ... + 46104226.

It is an arithmetic number, because the mean of its divisors is an integer number (5578582306).

Almost surely, 2^22222121011 is an apocalyptic number.

22222121011 is a deficient number, since it is larger than the sum of its proper divisors (92208213).

22222121011 is an equidigital number, since it uses as much as digits as its factorization.

22222121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92208212.

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

Adding to 22222121011 its reverse (11012122222), we get a palindrome (33234243233).

The spelling of 22222121011 in words is "twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, eleven".