22220202012 has 48 divisors (see below), whose sum is σ = 53242033152. Its totient is φ = 7208691840.

The previous prime is 22220202001. The next prime is 22220202029. The reversal of 22220202012 is 21020202222.

It is a junction number, because it is equal to n+sod(n) for n = 22220201982 and 22220202000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68373 + ... + 221619.

It is an arithmetic number, because the mean of its divisors is an integer number (1109209024).

Almost surely, 2^22220202012 is an apocalyptic number.

It is an amenable number.

22220202012 is an abundant number, since it is smaller than the sum of its proper divisors (31021831140).

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

22220202012 is a wasteful number, since it uses less digits than its factorization.

22220202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153578 (or 153576 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22220202012 its reverse (21020202222), we get a palindrome (43240404234).

The spelling of 22220202012 in words is "twenty-two billion, two hundred twenty million, two hundred two thousand, twelve".