1121221113019 has 6 divisors (see below), whose sum is σ = 1304277621324. Its totient is φ = 961046668260.

The previous prime is 1121221113011. The next prime is 1121221113049. The reversal of 1121221113019 is 9103111221211.

It is a happy number.

It is not a de Polignac number, because 1121221113019 - 2³ = 1121221113011 is a prime.

It is a super-2 number, since 2×1121221113019² (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 = 1121221112984 and 1121221113002.

It is not an unprimeable number, because it can be changed into a prime (1121221113011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11441031717 + ... + 11441031814.

It is an arithmetic number, because the mean of its divisors is an integer number (217379603554).

Almost surely, 2^{1121221113019} is an apocalyptic number.

1121221113019 is a deficient number, since it is larger than the sum of its proper divisors (183056508305).

1121221113019 is an equidigital number, since it uses as much as digits as its factorization.

1121221113019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22882063545 (or 22882063538 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 1121221113019 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thirteen thousand, nineteen".