222122022012 has 96 divisors (see below), whose sum is σ = 630492791040. Its totient is φ = 67066608960.

The previous prime is 222122021999. The next prime is 222122022061. The reversal of 222122022012 is 210220221222.

222122022012 is a `hidden beast` number, since 2 + 221 + 220 + 220 + 1 + 2 = 666.

222122022012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8418 + ... + 666569.

It is an arithmetic number, because the mean of its divisors is an integer number (6567633240).

Almost surely, 2^222122022012 is an apocalyptic number.

222122022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222122022012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315246395520).

222122022012 is an abundant number, since it is smaller than the sum of its proper divisors (408370769028).

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

222122022012 is a wasteful number, since it uses less digits than its factorization.

222122022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675288 (or 675280 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222122022012 its reverse (210220221222), we get a palindrome (432342243234).

The spelling of 222122022012 in words is "two hundred twenty-two billion, one hundred twenty-two million, twenty-two thousand, twelve".