212131331123149 has 2 divisors, whose sum is σ = 212131331123150. Its totient is φ = 212131331123148.

The previous prime is 212131331123141. The next prime is 212131331123267. The reversal of 212131331123149 is 941321133131212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205552952545924 + 6578378577225 = 14337118^2 + 2564835^2 .

It is a cyclic number.

It is not a de Polignac number, because 212131331123149 - 2³ = 212131331123141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212131331123141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106065665561574 + 106065665561575.

It is an arithmetic number, because the mean of its divisors is an integer number (106065665561575).

Almost surely, 2^{212131331123149} is an apocalyptic number.

It is an amenable number.

212131331123149 is a deficient number, since it is larger than the sum of its proper divisors (1).

212131331123149 is an equidigital number, since it uses as much as digits as its factorization.

212131331123149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The spelling of 212131331123149 in words is "two hundred twelve trillion, one hundred thirty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred forty-nine".