2122131481 has 2 divisors, whose sum is σ = 2122131482. Its totient is φ = 2122131480.

The previous prime is 2122131439. The next prime is 2122131511. The reversal of 2122131481 is 1841312212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1850376256 + 271755225 = 43016^2 + 16485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122131481 - 2¹⁷ = 2122000409 is a prime.

It is a super-2 number, since 2×2122131481² = 9006884045302506722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2122131421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061065740 + 1061065741.

It is an arithmetic number, because the mean of its divisors is an integer number (1061065741).

Almost surely, 2^2122131481 is an apocalyptic number.

It is an amenable number.

2122131481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122131481 is an equidigital number, since it uses as much as digits as its factorization.

2122131481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 25.

The square root of 2122131481 is about 46066.5983224288. The cubic root of 2122131481 is about 1285.0620430611.

Adding to 2122131481 its reverse (1841312212), we get a palindrome (3963443693).

The spelling of 2122131481 in words is "two billion, one hundred twenty-two million, one hundred thirty-one thousand, four hundred eighty-one".