21111010110019 has 2 divisors, whose sum is σ = 21111010110020. Its totient is φ = 21111010110018.

The previous prime is 21111010109953. The next prime is 21111010110037. The reversal of 21111010110019 is 91001101011112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21111010110019 - 2²⁵ = 21110976555587 is a prime.

It is a super-2 number, since 2×21111010110019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111010109978 and 21111010110005.

It is not a weakly prime, because it can be changed into another prime (21111010110319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555505055009 + 10555505055010.

It is an arithmetic number, because the mean of its divisors is an integer number (10555505055010).

Almost surely, 2^{21111010110019} is an apocalyptic number.

21111010110019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111010110019 is an equidigital number, since it uses as much as digits as its factorization.

21111010110019 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 19.

The spelling of 21111010110019 in words is "twenty-one trillion, one hundred eleven billion, ten million, one hundred ten thousand, nineteen".