1131122113221 has 8 divisors (see below), whose sum is σ = 1522257797664. Its totient is φ = 747033918800.

The previous prime is 1131122113217. The next prime is 1131122113259. The reversal of 1131122113221 is 1223112211311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131122113221 - 2² = 1131122113217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131122113201) 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 7 ways as a sum of consecutive naturals, for example, 1761872130 + ... + 1761872771.

It is an arithmetic number, because the mean of its divisors is an integer number (190282224708).

Almost surely, 2^{1131122113221} is an apocalyptic number.

It is an amenable number.

1131122113221 is a deficient number, since it is larger than the sum of its proper divisors (391135684443).

1131122113221 is a wasteful number, since it uses less digits than its factorization.

1131122113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523745011.

The product of its digits is 144, while the sum is 21.

Adding to 1131122113221 its reverse (1223112211311), we get a palindrome (2354234324532).

The spelling of 1131122113221 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-two million, one hundred thirteen thousand, two hundred twenty-one".