20011111222019 has 2 divisors, whose sum is σ = 20011111222020. Its totient is φ = 20011111222018.

The previous prime is 20011111221923. The next prime is 20011111222073. The reversal of 20011111222019 is 91022211111002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011111222019 - 2³² = 20006816254723 is a prime.

It is a super-2 number, since 2×20011111222019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011111221985 and 20011111222003.

It is not a weakly prime, because it can be changed into another prime (20011111222099) 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, 10005555611009 + 10005555611010.

It is an arithmetic number, because the mean of its divisors is an integer number (10005555611010).

Almost surely, 2^{20011111222019} is an apocalyptic number.

20011111222019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011111222019 is an equidigital number, since it uses as much as digits as its factorization.

20011111222019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 20011111222019 in words is "twenty trillion, eleven billion, one hundred eleven million, two hundred twenty-two thousand, nineteen".