1131221302113 has 8 divisors (see below), whose sum is σ = 1723765793728. Its totient is φ = 646412172624.

The previous prime is 1131221302093. The next prime is 1131221302151. The reversal of 1131221302113 is 3112031221311.

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

It is not a de Polignac number, because 1131221302113 - 2²¹ = 1131219204961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 53867681053 = 1131221302113 / (1 + 1 + 3 + 1 + 2 + 2 + 1 + 3 + 0 + 2 + 1 + 1 + 3).

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 1131221302113.

It is not an unprimeable number, because it can be changed into a prime (1131221302193) 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, 26933840506 + ... + 26933840547.

It is an arithmetic number, because the mean of its divisors is an integer number (215470724216).

Almost surely, 2^{1131221302113} is an apocalyptic number.

It is an amenable number.

1131221302113 is a deficient number, since it is larger than the sum of its proper divisors (592544491615).

1131221302113 is an equidigital number, since it uses as much as digits as its factorization.

1131221302113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53867681063.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1131221302113 its reverse (3112031221311), we get a palindrome (4243252523424).

The spelling of 1131221302113 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred two thousand, one hundred thirteen".