21411042019 has 2 divisors, whose sum is σ = 21411042020. Its totient is φ = 21411042018.

The previous prime is 21411042013. The next prime is 21411042047. The reversal of 21411042019 is 91024011412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21411042019 - 2¹⁵ = 21411009251 is a prime.

It is a super-2 number, since 2×21411042019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21411041984 and 21411042002.

It is not a weakly prime, because it can be changed into another prime (21411042013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10705521009 + 10705521010.

It is an arithmetic number, because the mean of its divisors is an integer number (10705521010).

Almost surely, 2^21411042019 is an apocalyptic number.

21411042019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21411042019 is an equidigital number, since it uses as much as digits as its factorization.

21411042019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 21411042019 in words is "twenty-one billion, four hundred eleven million, forty-two thousand, nineteen".