22121220011 has 16 divisors (see below), whose sum is σ = 25098298368. Its totient is φ = 19320487200.

The previous prime is 22121219999. The next prime is 22121220049. The reversal of 22121220011 is 11002212122.

It is a cyclic number.

It is not a de Polignac number, because 22121220011 - 2¹⁴ = 22121203627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121220311) 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 15 ways as a sum of consecutive naturals, for example, 354491 + ... + 412196.

It is an arithmetic number, because the mean of its divisors is an integer number (1568643648).

Almost surely, 2^22121220011 is an apocalyptic number.

22121220011 is a deficient number, since it is larger than the sum of its proper divisors (2977078357).

22121220011 is a wasteful number, since it uses less digits than its factorization.

22121220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766802.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22121220011 its reverse (11002212122), we get a palindrome (33123432133).

The spelling of 22121220011 in words is "twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, eleven".