21033132019 has 2 divisors, whose sum is σ = 21033132020. Its totient is φ = 21033132018.

The previous prime is 21033132011. The next prime is 21033132067. The reversal of 21033132019 is 91023133012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21033132019 - 2³ = 21033132011 is a prime.

It is a super-2 number, since 2×21033132019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21033131984 and 21033132002.

It is not a weakly prime, because it can be changed into another prime (21033132011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516566009 + 10516566010.

It is an arithmetic number, because the mean of its divisors is an integer number (10516566010).

Almost surely, 2^21033132019 is an apocalyptic number.

21033132019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033132019 is an equidigital number, since it uses as much as digits as its factorization.

21033132019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 21033132019 in words is "twenty-one billion, thirty-three million, one hundred thirty-two thousand, nineteen".