222120012 has 24 divisors (see below), whose sum is σ = 520998912. Its totient is φ = 73651600.

The previous prime is 222119987. The next prime is 222120023. The reversal of 222120012 is 210021222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 222120012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46164 + ... + 50747.

It is an arithmetic number, because the mean of its divisors is an integer number (21708288).

Almost surely, 2^222120012 is an apocalyptic number.

It is an amenable number.

222120012 is an abundant number, since it is smaller than the sum of its proper divisors (298878900).

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

222120012 is a wasteful number, since it uses less digits than its factorization.

222120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97109 (or 97107 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 222120012 is about 14903.6912206339. The cubic root of 222120012 is about 605.6139858864.

Adding to 222120012 its reverse (210021222), we get a palindrome (432141234).

The spelling of 222120012 in words is "two hundred twenty-two million, one hundred twenty thousand, twelve".