21333102031009 has 2 divisors, whose sum is σ = 21333102031010. Its totient is φ = 21333102031008.

The previous prime is 21333102031001. The next prime is 21333102031027. The reversal of 21333102031009 is 90013020133312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17451130277025 + 3881971753984 = 4177455^2 + 1970272^2 .

It is a cyclic number.

It is not a de Polignac number, because 21333102031009 - 2³ = 21333102031001 is a prime.

It is not a weakly prime, because it can be changed into another prime (21333102031001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666551015504 + 10666551015505.

It is an arithmetic number, because the mean of its divisors is an integer number (10666551015505).

Almost surely, 2^{21333102031009} is an apocalyptic number.

It is an amenable number.

21333102031009 is a deficient number, since it is larger than the sum of its proper divisors (1).

21333102031009 is an equidigital number, since it uses as much as digits as its factorization.

21333102031009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 21333102031009 in words is "twenty-one trillion, three hundred thirty-three billion, one hundred two million, thirty-one thousand, nine".