2112143135321 has 2 divisors, whose sum is σ = 2112143135322. Its totient is φ = 2112143135320.

The previous prime is 2112143135309. The next prime is 2112143135351. The reversal of 2112143135321 is 1235313412112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1711023579721 + 401119555600 = 1308061^2 + 633340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112143135321 - 2¹⁸ = 2112142873177 is a prime.

It is a super-2 number, since 2×2112143135321² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112143135351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056071567660 + 1056071567661.

It is an arithmetic number, because the mean of its divisors is an integer number (1056071567661).

Almost surely, 2^{2112143135321} is an apocalyptic number.

It is an amenable number.

2112143135321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112143135321 is an equidigital number, since it uses as much as digits as its factorization.

2112143135321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

Adding to 2112143135321 its reverse (1235313412112), we get a palindrome (3347456547433).

The spelling of 2112143135321 in words is "two trillion, one hundred twelve billion, one hundred forty-three million, one hundred thirty-five thousand, three hundred twenty-one".