21030301219 has 4 divisors (see below), whose sum is σ = 21084364080. Its totient is φ = 20976238360.

The previous prime is 21030301177. The next prime is 21030301241. The reversal of 21030301219 is 91210303012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21030301219 is a prime.

It is a super-2 number, since 2×21030301219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21030301219.

It is not an unprimeable number, because it can be changed into a prime (21030301249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27030847 + ... + 27031624.

It is an arithmetic number, because the mean of its divisors is an integer number (5271091020).

Almost surely, 2^21030301219 is an apocalyptic number.

21030301219 is a deficient number, since it is larger than the sum of its proper divisors (54062861).

21030301219 is an equidigital number, since it uses as much as digits as its factorization.

21030301219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54062860.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 21030301219 in words is "twenty-one billion, thirty million, three hundred one thousand, two hundred nineteen".