22121020122 has 32 divisors (see below), whose sum is σ = 44784161280. Its totient is φ = 7283866800.

The previous prime is 22121020121. The next prime is 22121020153. The reversal of 22121020122 is 22102012122.

It is not an unprimeable number, because it can be changed into a prime (22121020121) 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, 93973 + ... + 230375.

It is an arithmetic number, because the mean of its divisors is an integer number (1399505040).

Almost surely, 2^22121020122 is an apocalyptic number.

22121020122 is an abundant number, since it is smaller than the sum of its proper divisors (22663141158).

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

22121020122 is a wasteful number, since it uses less digits than its factorization.

22121020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136738.

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

Adding to 22121020122 its reverse (22102012122), we get a palindrome (44223032244).

The spelling of 22121020122 in words is "twenty-two billion, one hundred twenty-one million, twenty thousand, one hundred twenty-two".