21110101111019 has 2 divisors, whose sum is σ = 21110101111020. Its totient is φ = 21110101111018.

The previous prime is 21110101110919. The next prime is 21110101111051. The reversal of 21110101111019 is 91011110101112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110101111019 - 2³⁶ = 21041381634283 is a prime.

It is a super-2 number, since 2×21110101111019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21110101191019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555050555509 + 10555050555510.

It is an arithmetic number, because the mean of its divisors is an integer number (10555050555510).

Almost surely, 2^{21110101111019} is an apocalyptic number.

21110101111019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110101111019 is an equidigital number, since it uses as much as digits as its factorization.

21110101111019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 20.

The spelling of 21110101111019 in words is "twenty-one trillion, one hundred ten billion, one hundred one million, one hundred eleven thousand, nineteen".