201121101112222 has 32 divisors (see below), whose sum is σ = 302583600000000. Its totient is φ = 100260265437696.

The previous prime is 201121101112207. The next prime is 201121101112247. The reversal of 201121101112222 is 222211101121102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201121101112222.

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 15 ways as a sum of consecutive naturals, for example, 11845276929 + ... + 11845293907.

It is an arithmetic number, because the mean of its divisors is an integer number (9455737500000).

Almost surely, 2^{201121101112222} is an apocalyptic number.

201121101112222 is a deficient number, since it is larger than the sum of its proper divisors (101462498887778).

201121101112222 is a wasteful number, since it uses less digits than its factorization.

201121101112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26688.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121101112222 its reverse (222211101121102), we get a palindrome (423332202233324).

The spelling of 201121101112222 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred one million, one hundred twelve thousand, two hundred twenty-two".