222012221312 has 32 divisors (see below), whose sum is σ = 505474255920. Its totient is φ = 95148094464.

The previous prime is 222012221243. The next prime is 222012221317. The reversal of 222012221312 is 213122210222.

222012221312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222012221317) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 123889853 + ... + 123891644.

Almost surely, 2^222012221312 is an apocalyptic number.

It is an amenable number.

222012221312 is an abundant number, since it is smaller than the sum of its proper divisors (283462034608).

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

222012221312 is an equidigital number, since it uses as much as digits as its factorization.

222012221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247781518 (or 247781506 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222012221312 its reverse (213122210222), we get a palindrome (435134431534).

The spelling of 222012221312 in words is "two hundred twenty-two billion, twelve million, two hundred twenty-one thousand, three hundred twelve".