221102021221012 has 12 divisors (see below), whose sum is σ = 388006332507360. Its totient is φ = 110243069076056.

The previous prime is 221102021221007. The next prime is 221102021221063. The reversal of 221102021221012 is 210122120201122.

221102021221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×221102021221012³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76985381998 + ... + 76985384869.

It is an arithmetic number, because the mean of its divisors is an integer number (32333861042280).

Almost surely, 2^{221102021221012} is an apocalyptic number.

It is an amenable number.

221102021221012 is a deficient number, since it is larger than the sum of its proper divisors (166904311286348).

221102021221012 is a wasteful number, since it uses less digits than its factorization.

221102021221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153970767230 (or 153970767228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221102021221012 its reverse (210122120201122), we get a palindrome (431224141422134).

The spelling of 221102021221012 in words is "two hundred twenty-one trillion, one hundred two billion, twenty-one million, two hundred twenty-one thousand, twelve".