21000112102331 has 2 divisors, whose sum is σ = 21000112102332. Its totient is φ = 21000112102330.

The previous prime is 21000112102313. The next prime is 21000112102339. The reversal of 21000112102331 is 13320121100012.

Together with previous prime (21000112102313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000112102331 - 2¹⁰ = 21000112101307 is a prime.

It is a super-2 number, since 2×21000112102331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21000112102339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500056051165 + 10500056051166.

It is an arithmetic number, because the mean of its divisors is an integer number (10500056051166).

Almost surely, 2^{21000112102331} is an apocalyptic number.

21000112102331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000112102331 is an equidigital number, since it uses as much as digits as its factorization.

21000112102331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21000112102331 its reverse (13320121100012), we get a palindrome (34320233202343).

The spelling of 21000112102331 in words is "twenty-one trillion, one hundred twelve million, one hundred two thousand, three hundred thirty-one".