1131220102321 has 2 divisors, whose sum is σ = 1131220102322. Its totient is φ = 1131220102320.

The previous prime is 1131220102319. The next prime is 1131220102403. The reversal of 1131220102321 is 1232010221311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806114869921 + 325105232400 = 897839^2 + 570180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131220102321 - 2¹ = 1131220102319 is a prime.

Together with 1131220102319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1131220102921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565610051160 + 565610051161.

It is an arithmetic number, because the mean of its divisors is an integer number (565610051161).

Almost surely, 2^{1131220102321} is an apocalyptic number.

It is an amenable number.

1131220102321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131220102321 is an equidigital number, since it uses as much as digits as its factorization.

1131220102321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1131220102321 its reverse (1232010221311), we get a palindrome (2363230323632).

The spelling of 1131220102321 in words is "one trillion, one hundred thirty-one billion, two hundred twenty million, one hundred two thousand, three hundred twenty-one".