1121221120211 has 16 divisors (see below), whose sum is σ = 1171411476480. Its totient is φ = 1071151767840.

The previous prime is 1121221120181. The next prime is 1121221120241. The reversal of 1121221120211 is 1120211221211.

It is an interprime number because it is at equal distance from previous prime (1121221120181) and next prime (1121221120241).

It is a cyclic number.

It is not a de Polignac number, because 1121221120211 - 2¹⁸ = 1121220858067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121221120211.

It is not an unprimeable number, because it can be changed into a prime (1121221120241) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 68977361 + ... + 68993613.

It is an arithmetic number, because the mean of its divisors is an integer number (73213217280).

Almost surely, 2^{1121221120211} is an apocalyptic number.

1121221120211 is a deficient number, since it is larger than the sum of its proper divisors (50190356269).

1121221120211 is a wasteful number, since it uses less digits than its factorization.

1121221120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19786.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121221120211 its reverse (1120211221211), we get a palindrome (2241432341422).

The spelling of 1121221120211 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, two hundred eleven".