22122102012 has 12 divisors (see below), whose sum is σ = 51618238056. Its totient is φ = 7374034000.

The previous prime is 22122102001. The next prime is 22122102049. The reversal of 22122102012 is 21020122122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22122101982 and 22122102000.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 921754239 + ... + 921754262.

It is an arithmetic number, because the mean of its divisors is an integer number (4301519838).

Almost surely, 2^22122102012 is an apocalyptic number.

It is an amenable number.

22122102012 is an abundant number, since it is smaller than the sum of its proper divisors (29496136044).

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

22122102012 is a wasteful number, since it uses less digits than its factorization.

22122102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843508508 (or 1843508506 counting only the distinct ones).

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

Adding to 22122102012 its reverse (21020122122), we get a palindrome (43142224134).

The spelling of 22122102012 in words is "twenty-two billion, one hundred twenty-two million, one hundred two thousand, twelve".