221121202221112 has 16 divisors (see below), whose sum is σ = 414694531608840. Its totient is φ = 110535993792096.

The previous prime is 221121202221109. The next prime is 221121202221113. The reversal of 221121202221112 is 211122202121122.

221121202221112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221121202221113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075876618 + ... + 3075948505.

Almost surely, 2^{221121202221112} is an apocalyptic number.

It is an amenable number.

221121202221112 is a deficient number, since it is larger than the sum of its proper divisors (193573329387728).

221121202221112 is a wasteful number, since it uses less digits than its factorization.

221121202221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151829622 (or 6151829618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221121202221112 its reverse (211122202121122), we get a palindrome (432243404342234).

The spelling of 221121202221112 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, one hundred twelve".