222222012 has 48 divisors (see below), whose sum is σ = 553728000. Its totient is φ = 69209280.

The previous prime is 222221971. The next prime is 222222029. The reversal of 222222012 is 210222222.

It is a junction number, because it is equal to n+sod(n) for n = 222221982 and 222222000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489 + ... + 21087.

It is an arithmetic number, because the mean of its divisors is an integer number (11536000).

Almost surely, 2^222222012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222222012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276864000).

222222012 is an abundant number, since it is smaller than the sum of its proper divisors (331505988).

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

222222012 is a wasteful number, since it uses less digits than its factorization.

222222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666 (or 20664 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 222222012 is about 14907.1127989292. The cubic root of 222222012 is about 605.7066732778.

Adding to 222222012 its reverse (210222222), we get a palindrome (432444234).

The spelling of 222222012 in words is "two hundred twenty-two million, two hundred twenty-two thousand, twelve".