221011112012 has 12 divisors (see below), whose sum is σ = 400106323680. Its totient is φ = 106695019536.

The previous prime is 221011112011. The next prime is 221011112017. The reversal of 221011112012 is 210211110122.

221011112012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221011112011) 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, 952633988 + ... + 952634219.

It is an arithmetic number, because the mean of its divisors is an integer number (33342193640).

Almost surely, 2^221011112012 is an apocalyptic number.

It is an amenable number.

221011112012 is a deficient number, since it is larger than the sum of its proper divisors (179095211668).

221011112012 is a wasteful number, since it uses less digits than its factorization.

221011112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905268240 (or 1905268238 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221011112012 its reverse (210211110122), we get a palindrome (431222222134).

The spelling of 221011112012 in words is "two hundred twenty-one billion, eleven million, one hundred twelve thousand, twelve".