221011120012 has 6 divisors (see below), whose sum is σ = 386769460028. Its totient is φ = 110505560004.

The previous prime is 221011120007. The next prime is 221011120133. The reversal of 221011120012 is 210021110122.

221011120012 is digitally balanced in base 2, because in such base 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 = 221011119974 and 221011120001.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27626389998 + ... + 27626390005.

Almost surely, 2^221011120012 is an apocalyptic number.

It is an amenable number.

221011120012 is a deficient number, since it is larger than the sum of its proper divisors (165758340016).

221011120012 is a wasteful number, since it uses less digits than its factorization.

221011120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55252780007 (or 55252780005 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221011120012 its reverse (210021110122), we get a palindrome (431032230134).

The spelling of 221011120012 in words is "two hundred twenty-one billion, eleven million, one hundred twenty thousand, twelve".