22220202212 has 12 divisors (see below), whose sum is σ = 41876535036. Its totient is φ = 10255477920.

The previous prime is 22220202211. The next prime is 22220202229. The reversal of 22220202212 is 21220202222.

It can be written as a sum of positive squares in 2 ways, for example, as 3880542436 + 18339659776 = 62294^2 + 135424^2 .

It is not an unprimeable number, because it can be changed into a prime (22220202211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213655739 + ... + 213655842.

It is an arithmetic number, because the mean of its divisors is an integer number (3489711253).

Almost surely, 2^22220202212 is an apocalyptic number.

It is an amenable number.

22220202212 is a deficient number, since it is larger than the sum of its proper divisors (19656332824).

22220202212 is a wasteful number, since it uses less digits than its factorization.

22220202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427311598 (or 427311596 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22220202212 its reverse (21220202222), we get a palindrome (43440404434).

The spelling of 22220202212 in words is "twenty-two billion, two hundred twenty million, two hundred two thousand, two hundred twelve".