20111000021219 has 2 divisors, whose sum is σ = 20111000021220. Its totient is φ = 20111000021218.

The previous prime is 20111000021149. The next prime is 20111000021261. The reversal of 20111000021219 is 91212000011102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111000021219 is a prime.

It is a super-2 number, since 2×20111000021219² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20111000021219.

It is not a weakly prime, because it can be changed into another prime (20111000021719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055500010609 + 10055500010610.

It is an arithmetic number, because the mean of its divisors is an integer number (10055500010610).

Almost surely, 2^{20111000021219} is an apocalyptic number.

20111000021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111000021219 is an equidigital number, since it uses as much as digits as its factorization.

20111000021219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 20111000021219 in words is "twenty trillion, one hundred eleven billion, twenty-one thousand, two hundred nineteen".