20001111010019 has 2 divisors, whose sum is σ = 20001111010020. Its totient is φ = 20001111010018.

The previous prime is 20001111010009. The next prime is 20001111010063. The reversal of 20001111010019 is 91001011110002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001111010019 - 2⁴⁰ = 18901599382243 is a prime.

It is a super-2 number, since 2×20001111010019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20001111009979 and 20001111010006.

It is not a weakly prime, because it can be changed into another prime (20001111010009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000555505009 + 10000555505010.

It is an arithmetic number, because the mean of its divisors is an integer number (10000555505010).

Almost surely, 2^{20001111010019} is an apocalyptic number.

20001111010019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001111010019 is an equidigital number, since it uses as much as digits as its factorization.

20001111010019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 20001111010019 in words is "twenty trillion, one billion, one hundred eleven million, ten thousand, nineteen".