22220002012 has 24 divisors (see below), whose sum is σ = 43696862496. Its totient is φ = 9809498688.

The previous prime is 22220002009. The next prime is 22220002033. The reversal of 22220002012 is 21020002222.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 22220001983 and 22220002001.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9288103 + ... + 9290494.

It is an arithmetic number, because the mean of its divisors is an integer number (1820702604).

Almost surely, 2^22220002012 is an apocalyptic number.

It is an amenable number.

22220002012 is a deficient number, since it is larger than the sum of its proper divisors (21476860484).

22220002012 is a wasteful number, since it uses less digits than its factorization.

22220002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18578637 (or 18578635 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22220002012 its reverse (21020002222), we get a palindrome (43240004234).

The spelling of 22220002012 in words is "twenty-two billion, two hundred twenty million, two thousand, twelve".