2131541543122 has 12 divisors (see below), whose sum is σ = 3266787645630. Its totient is φ = 1043094795536.

The previous prime is 2131541543081. The next prime is 2131541543143. The reversal of 2131541543122 is 2213451451312.

It can be written as a sum of positive squares in only one way, i.e., 1197494678601 + 934046864521 = 1094301^2 + 966461^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 241229347 + ... + 241238182.

Almost surely, 2^{2131541543122} is an apocalyptic number.

2131541543122 is a deficient number, since it is larger than the sum of its proper divisors (1135246102508).

2131541543122 is an equidigital number, since it uses as much as digits as its factorization.

2131541543122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482467625 (or 482467578 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

Adding to 2131541543122 its reverse (2213451451312), we get a palindrome (4344992994434).

The spelling of 2131541543122 in words is "two trillion, one hundred thirty-one billion, five hundred forty-one million, five hundred forty-three thousand, one hundred twenty-two".