131211221301151 has 2 divisors, whose sum is σ = 131211221301152. Its totient is φ = 131211221301150.

The previous prime is 131211221301113. The next prime is 131211221301221. The reversal of 131211221301151 is 151103122112131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131211221301151 - 2²⁵ = 131211187746719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131211221301751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65605610650575 + 65605610650576.

It is an arithmetic number, because the mean of its divisors is an integer number (65605610650576).

Almost surely, 2^{131211221301151} is an apocalyptic number.

131211221301151 is a deficient number, since it is larger than the sum of its proper divisors (1).

131211221301151 is an equidigital number, since it uses as much as digits as its factorization.

131211221301151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 25.

Adding to 131211221301151 its reverse (151103122112131), we get a palindrome (282314343413282).

The spelling of 131211221301151 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred twenty-one million, three hundred one thousand, one hundred fifty-one".