22220212004 has 12 divisors (see below), whose sum is σ = 39242118300. Its totient is φ = 11008178208.

The previous prime is 22220211989. The next prime is 22220212013. The reversal of 22220212004 is 40021202222.

It can be written as a sum of positive squares in 2 ways, for example, as 19858446400 + 2361765604 = 140920^2 + 48598^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25481459 + ... + 25482330.

It is an arithmetic number, because the mean of its divisors is an integer number (3270176525).

Almost surely, 2^22220212004 is an apocalyptic number.

It is an amenable number.

22220212004 is a deficient number, since it is larger than the sum of its proper divisors (17021906296).

22220212004 is a wasteful number, since it uses less digits than its factorization.

22220212004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50963902 (or 50963900 counting only the distinct ones).

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

Adding to 22220212004 its reverse (40021202222), we get a palindrome (62241414226).

The spelling of 22220212004 in words is "twenty-two billion, two hundred twenty million, two hundred twelve thousand, four".