22122001012 has 6 divisors (see below), whose sum is σ = 38713501778. Its totient is φ = 11061000504.

The previous prime is 22122000997. The next prime is 22122001019. The reversal of 22122001012 is 21010022122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19450765156 + 2671235856 = 139466^2 + 51684^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22122000983 and 22122001001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122001019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765250123 + ... + 2765250130.

Almost surely, 2^22122001012 is an apocalyptic number.

It is an amenable number.

22122001012 is a deficient number, since it is larger than the sum of its proper divisors (16591500766).

22122001012 is a wasteful number, since it uses less digits than its factorization.

22122001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530500257 (or 5530500255 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22122001012 its reverse (21010022122), we get a palindrome (43132023134).

The spelling of 22122001012 in words is "twenty-two billion, one hundred twenty-two million, one thousand, twelve".