22120121211 has 16 divisors (see below), whose sum is σ = 29670518304. Its totient is φ = 14658361344.

The previous prime is 22120121159. The next prime is 22120121237. The reversal of 22120121211 is 11212102122.

It is not a de Polignac number, because 22120121211 - 2⁶ = 22120121147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22120121281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724425 + ... + 754341.

It is an arithmetic number, because the mean of its divisors is an integer number (1854407394).

Almost surely, 2^22120121211 is an apocalyptic number.

22120121211 is a deficient number, since it is larger than the sum of its proper divisors (7550397093).

22120121211 is a wasteful number, since it uses less digits than its factorization.

22120121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31390.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22120121211 its reverse (11212102122), we get a palindrome (33332223333).

The spelling of 22120121211 in words is "twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred eleven".