1121131220111 has 8 divisors (see below), whose sum is σ = 1337001206784. Its totient is φ = 919188329400.

The previous prime is 1121131220039. The next prime is 1121131220129. The reversal of 1121131220111 is 1110221311211.

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 1121131220111 - 2¹⁴ = 1121131203727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121131220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121131220611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3481773815 + ... + 3481774136.

It is an arithmetic number, because the mean of its divisors is an integer number (167125150848).

Almost surely, 2^{1121131220111} is an apocalyptic number.

1121131220111 is a deficient number, since it is larger than the sum of its proper divisors (215869986673).

1121131220111 is an equidigital number, since it uses as much as digits as its factorization.

1121131220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963547981.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1121131220111 its reverse (1110221311211), we get a palindrome (2231352531322).

The spelling of 1121131220111 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-one million, two hundred twenty thousand, one hundred eleven".