22121200122 has 64 divisors (see below), whose sum is σ = 54336199680. Its totient is φ = 5859760896.

The previous prime is 22121200117. The next prime is 22121200159. The reversal of 22121200122 is 22100212122.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 183372 + ... + 279047.

It is an arithmetic number, because the mean of its divisors is an integer number (849003120).

Almost surely, 2^22121200122 is an apocalyptic number.

22121200122 is an abundant number, since it is smaller than the sum of its proper divisors (32214999558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121200122 is a wasteful number, since it uses less digits than its factorization.

22121200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462515.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22121200122 its reverse (22100212122), we get a palindrome (44221412244).

The spelling of 22121200122 in words is "twenty-two billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-two".