222001221012 has 48 divisors (see below), whose sum is σ = 521912905920. Its totient is φ = 73442932992.

The previous prime is 222001221011. The next prime is 222001221017. The reversal of 222001221012 is 210122100222.

222001221012 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 222001220982 and 222001221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001221011) 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 15 ways as a sum of consecutive naturals, for example, 1549768 + ... + 1686944.

It is an arithmetic number, because the mean of its divisors is an integer number (10873185540).

Almost surely, 2^222001221012 is an apocalyptic number.

It is an amenable number.

222001221012 is an abundant number, since it is smaller than the sum of its proper divisors (299911684908).

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

222001221012 is a wasteful number, since it uses less digits than its factorization.

222001221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138200 (or 138198 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222001221012 its reverse (210122100222), we get a palindrome (432123321234).

The spelling of 222001221012 in words is "two hundred twenty-two billion, one million, two hundred twenty-one thousand, twelve".