1011111122019 has 4 divisors (see below), whose sum is σ = 1348148162696. Its totient is φ = 674074081344.

The previous prime is 1011111121981. The next prime is 1011111122027. The reversal of 1011111122019 is 9102211111101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1011111122019 - 2²⁴ = 1011094344803 is a prime.

It is a super-2 number, since 2×1011111122019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011111121986 and 1011111122004.

It is not an unprimeable number, because it can be changed into a prime (1011111122089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168518520334 + ... + 168518520339.

It is an arithmetic number, because the mean of its divisors is an integer number (337037040674).

Almost surely, 2^{1011111122019} is an apocalyptic number.

1011111122019 is a deficient number, since it is larger than the sum of its proper divisors (337037040677).

1011111122019 is an equidigital number, since it uses as much as digits as its factorization.

1011111122019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337037040676.

The product of its (nonzero) digits is 36, while the sum is 21.

The spelling of 1011111122019 in words is "one trillion, eleven billion, one hundred eleven million, one hundred twenty-two thousand, nineteen".