21143100133289 has 2 divisors, whose sum is σ = 21143100133290. Its totient is φ = 21143100133288.

The previous prime is 21143100133249. The next prime is 21143100133453. The reversal of 21143100133289 is 98233100134112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17702383056400 + 3440717076889 = 4207420^2 + 1854917^2 .

It is a cyclic number.

It is not a de Polignac number, because 21143100133289 - 2⁸ = 21143100133033 is a prime.

It is not a weakly prime, because it can be changed into another prime (21143100133219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571550066644 + 10571550066645.

It is an arithmetic number, because the mean of its divisors is an integer number (10571550066645).

Almost surely, 2^{21143100133289} is an apocalyptic number.

It is an amenable number.

21143100133289 is a deficient number, since it is larger than the sum of its proper divisors (1).

21143100133289 is an equidigital number, since it uses as much as digits as its factorization.

21143100133289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 21143100133289 in words is "twenty-one trillion, one hundred forty-three billion, one hundred million, one hundred thirty-three thousand, two hundred eighty-nine".