22022220212 has 6 divisors (see below), whose sum is σ = 38538885378. Its totient is φ = 11011110104.

The previous prime is 22022220149. The next prime is 22022220271. The reversal of 22022220212 is 21202222022.

It can be written as a sum of positive squares in only one way, i.e., 20085692176 + 1936528036 = 141724^2 + 44006^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752777523 + ... + 2752777530.

It is an arithmetic number, because the mean of its divisors is an integer number (6423147563).

Almost surely, 2^22022220212 is an apocalyptic number.

It is an amenable number.

22022220212 is a deficient number, since it is larger than the sum of its proper divisors (16516665166).

22022220212 is a wasteful number, since it uses less digits than its factorization.

22022220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505555057 (or 5505555055 counting only the distinct ones).

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

Adding to 22022220212 its reverse (21202222022), we get a palindrome (43224442234).

The spelling of 22022220212 in words is "twenty-two billion, twenty-two million, two hundred twenty thousand, two hundred twelve".