21110012102219 has 2 divisors, whose sum is σ = 21110012102220. Its totient is φ = 21110012102218.

The previous prime is 21110012102191. The next prime is 21110012102233. The reversal of 21110012102219 is 91220121001112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110012102219 - 2²⁰ = 21110011053643 is a prime.

It is a super-2 number, since 2×21110012102219² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110012102194 and 21110012102203.

It is not a weakly prime, because it can be changed into another prime (21110012102419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555006051109 + 10555006051110.

It is an arithmetic number, because the mean of its divisors is an integer number (10555006051110).

Almost surely, 2^{21110012102219} is an apocalyptic number.

21110012102219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110012102219 is an equidigital number, since it uses as much as digits as its factorization.

21110012102219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 21110012102219 in words is "twenty-one trillion, one hundred ten billion, twelve million, one hundred two thousand, two hundred nineteen".