22123020012 has 24 divisors (see below), whose sum is σ = 52273804800. Its totient is φ = 7280993616.

The previous prime is 22123019993. The next prime is 22123020013. The reversal of 22123020012 is 21002032122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22123019973 and 22123020000.

It is not an unprimeable number, because it can be changed into a prime (22123020013) 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 7 ways as a sum of consecutive naturals, for example, 11667312 + ... + 11669207.

It is an arithmetic number, because the mean of its divisors is an integer number (2178075200).

Almost surely, 2^22123020012 is an apocalyptic number.

It is an amenable number.

22123020012 is an abundant number, since it is smaller than the sum of its proper divisors (30150784788).

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

22123020012 is a wasteful number, since it uses less digits than its factorization.

22123020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23336605 (or 23336603 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22123020012 its reverse (21002032122), we get a palindrome (43125052134).

The spelling of 22123020012 in words is "twenty-two billion, one hundred twenty-three million, twenty thousand, twelve".