21112220110019 has 2 divisors, whose sum is σ = 21112220110020. Its totient is φ = 21112220110018.

The previous prime is 21112220109947. The next prime is 21112220110039. The reversal of 21112220110019 is 91001102221112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21112220110019 - 2²⁰ = 21112219061443 is a prime.

It is a super-2 number, since 2×21112220110019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112220109976 and 21112220110003.

It is not a weakly prime, because it can be changed into another prime (21112220110039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556110055009 + 10556110055010.

It is an arithmetic number, because the mean of its divisors is an integer number (10556110055010).

Almost surely, 2^{21112220110019} is an apocalyptic number.

21112220110019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112220110019 is an equidigital number, since it uses as much as digits as its factorization.

21112220110019 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 21112220110019 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, one hundred ten thousand, nineteen".