221222000012 has 48 divisors (see below), whose sum is σ = 431375380800. Its totient is φ = 98563288320.

The previous prime is 221221999987. The next prime is 221222000047. The reversal of 221222000012 is 210000222122.

221222000012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11011937 + ... + 11032007.

It is an arithmetic number, because the mean of its divisors is an integer number (8986987100).

Almost surely, 2^221222000012 is an apocalyptic number.

It is an amenable number.

221222000012 is a deficient number, since it is larger than the sum of its proper divisors (210153380788).

221222000012 is a wasteful number, since it uses less digits than its factorization.

221222000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27426 (or 27424 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221222000012 its reverse (210000222122), we get a palindrome (431222222134).

The spelling of 221222000012 in words is "two hundred twenty-one billion, two hundred twenty-two million, twelve", and thus it is an aban number.