21332013019 has 2 divisors, whose sum is σ = 21332013020. Its totient is φ = 21332013018.

The previous prime is 21332013011. The next prime is 21332013023. The reversal of 21332013019 is 91031023312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21332013019 - 2³ = 21332013011 is a prime.

It is a super-2 number, since 2×21332013019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21332012984 and 21332013002.

It is not a weakly prime, because it can be changed into another prime (21332013011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666006509 + 10666006510.

It is an arithmetic number, because the mean of its divisors is an integer number (10666006510).

Almost surely, 2^21332013019 is an apocalyptic number.

21332013019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332013019 is an equidigital number, since it uses as much as digits as its factorization.

21332013019 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 21332013019 in words is "twenty-one billion, three hundred thirty-two million, thirteen thousand, nineteen".