222012212112 has 30 divisors (see below), whose sum is σ = 621325844022. Its totient is φ = 74004070656.

The previous prime is 222012212087. The next prime is 222012212117. The reversal of 222012212112 is 211212210222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 125214068736 + 96798143376 = 353856^2 + 311124^2 .

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

It is not an unprimeable number, because it can be changed into a prime (222012212117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770875593 + ... + 770875880.

Almost surely, 2^222012212112 is an apocalyptic number.

It is an amenable number.

222012212112 is an abundant number, since it is smaller than the sum of its proper divisors (399313631910).

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

222012212112 is a wasteful number, since it uses less digits than its factorization.

222012212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541751487 (or 1541751478 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222012212112 its reverse (211212210222), we get a palindrome (433224422334).

The spelling of 222012212112 in words is "two hundred twenty-two billion, twelve million, two hundred twelve thousand, one hundred twelve".