1131021210287 has 2 divisors, whose sum is σ = 1131021210288. Its totient is φ = 1131021210286.

The previous prime is 1131021210283. The next prime is 1131021210289. The reversal of 1131021210287 is 7820121201311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131021210287 - 2² = 1131021210283 is a prime.

Together with 1131021210289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131021210283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565510605143 + 565510605144.

It is an arithmetic number, because the mean of its divisors is an integer number (565510605144).

Almost surely, 2^{1131021210287} is an apocalyptic number.

1131021210287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131021210287 is an equidigital number, since it uses as much as digits as its factorization.

1131021210287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 1131021210287 its reverse (7820121201311), we get a palindrome (8951142411598).

The spelling of 1131021210287 in words is "one trillion, one hundred thirty-one billion, twenty-one million, two hundred ten thousand, two hundred eighty-seven".