201121121012222 has 16 divisors (see below), whose sum is σ = 317559974210640. Its totient is φ = 95267806590528.

The previous prime is 201121121012117. The next prime is 201121121012233. The reversal of 201121121012222 is 222210121121102.

It is a junction number, because it is equal to n+sod(n) for n = 201121121012194 and 201121121012203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51847778 + ... + 55591674.

It is an arithmetic number, because the mean of its divisors is an integer number (19847498388165).

Almost surely, 2^{201121121012222} is an apocalyptic number.

201121121012222 is a deficient number, since it is larger than the sum of its proper divisors (116438853198418).

201121121012222 is a wasteful number, since it uses less digits than its factorization.

201121121012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157595.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201121121012222 its reverse (222210121121102), we get a palindrome (423331242133324).

The spelling of 201121121012222 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, twelve thousand, two hundred twenty-two".