2122131287 has 2 divisors, whose sum is σ = 2122131288. Its totient is φ = 2122131286.

The previous prime is 2122131269. The next prime is 2122131311. The reversal of 2122131287 is 7821312212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2122131287 - 2¹⁴ = 2122114903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122131247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061065643 + 1061065644.

It is an arithmetic number, because the mean of its divisors is an integer number (1061065644).

Almost surely, 2^2122131287 is an apocalyptic number.

2122131287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122131287 is an equidigital number, since it uses as much as digits as its factorization.

2122131287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 2122131287 is about 46066.5962167816. The cubic root of 2122131287 is about 1285.0620039020.

Adding to 2122131287 its reverse (7821312212), we get a palindrome (9943443499).

The spelling of 2122131287 in words is "two billion, one hundred twenty-two million, one hundred thirty-one thousand, two hundred eighty-seven".