1131220301111 has 4 divisors (see below), whose sum is σ = 1132414832472. Its totient is φ = 1130025769752.

The previous prime is 1131220301041. The next prime is 1131220301149. The reversal of 1131220301111 is 1111030221311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131220301111 - 2¹⁰ = 1131220300087 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 1131220301111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131220301171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597264260 + ... + 597266153.

It is an arithmetic number, because the mean of its divisors is an integer number (283103708118).

Almost surely, 2^{1131220301111} is an apocalyptic number.

1131220301111 is a deficient number, since it is larger than the sum of its proper divisors (1194531361).

1131220301111 is an equidigital number, since it uses as much as digits as its factorization.

1131220301111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194531360.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1131220301111 its reverse (1111030221311), we get a palindrome (2242250522422).

The spelling of 1131220301111 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, three hundred one thousand, one hundred eleven".