22112230212 has 36 divisors (see below), whose sum is σ = 55991728156. Its totient is φ = 7357962240.

The previous prime is 22112230193. The next prime is 22112230243. The reversal of 22112230212 is 21203221122.

22112230212 is a `hidden beast` number, since 221 + 1 + 2 + 230 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10423593216 + 11688636996 = 102096^2 + 108114^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 511489 + ... + 553032.

Almost surely, 2^22112230212 is an apocalyptic number.

It is an amenable number.

22112230212 is an abundant number, since it is smaller than the sum of its proper divisors (33879497944).

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

22112230212 is a wasteful number, since it uses less digits than its factorization.

22112230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065108 (or 1065103 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22112230212 its reverse (21203221122), we get a palindrome (43315451334).

The spelling of 22112230212 in words is "twenty-two billion, one hundred twelve million, two hundred thirty thousand, two hundred twelve".