21103333219 has 2 divisors, whose sum is σ = 21103333220. Its totient is φ = 21103333218.

The previous prime is 21103333211. The next prime is 21103333249. The reversal of 21103333219 is 91233330112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21103333219 - 2³ = 21103333211 is a prime.

It is a super-2 number, since 2×21103333219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21103333211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551666609 + 10551666610.

It is an arithmetic number, because the mean of its divisors is an integer number (10551666610).

Almost surely, 2^21103333219 is an apocalyptic number.

21103333219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103333219 is an equidigital number, since it uses as much as digits as its factorization.

21103333219 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 21103333219 in words is "twenty-one billion, one hundred three million, three hundred thirty-three thousand, two hundred nineteen".