221312011012 has 12 divisors (see below), whose sum is σ = 387300170320. Its totient is φ = 110654819496.

The previous prime is 221312010991. The next prime is 221312011021. The reversal of 221312011012 is 210110213122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225439 + ... + 702457.

Almost surely, 2^221312011012 is an apocalyptic number.

It is an amenable number.

221312011012 is a deficient number, since it is larger than the sum of its proper divisors (165988159308).

221312011012 is a wasteful number, since it uses less digits than its factorization.

221312011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593010 (or 593008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221312011012 its reverse (210110213122), we get a palindrome (431422224134).

The spelling of 221312011012 in words is "two hundred twenty-one billion, three hundred twelve million, eleven thousand, twelve".