1131212202187 has 2 divisors, whose sum is σ = 1131212202188. Its totient is φ = 1131212202186.

The previous prime is 1131212202167. The next prime is 1131212202217. The reversal of 1131212202187 is 7812022121311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131212202187 - 2²⁷ = 1131077984459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131212202167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565606101093 + 565606101094.

It is an arithmetic number, because the mean of its divisors is an integer number (565606101094).

Almost surely, 2^{1131212202187} is an apocalyptic number.

1131212202187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131212202187 is an equidigital number, since it uses as much as digits as its factorization.

1131212202187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

Adding to 1131212202187 its reverse (7812022121311), we get a palindrome (8943234323498).

The spelling of 1131212202187 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, two hundred two thousand, one hundred eighty-seven".