1101111221019 has 4 divisors (see below), whose sum is σ = 1468148294696. Its totient is φ = 734074147344.

The previous prime is 1101111220969. The next prime is 1101111221051. The reversal of 1101111221019 is 9101221111011.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1101111221019 is a prime.

It is a super-2 number, since 2×1101111221019² (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 = 1101111220986 and 1101111221004.

It is not an unprimeable number, because it can be changed into a prime (1101111221069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183518536834 + ... + 183518536839.

It is an arithmetic number, because the mean of its divisors is an integer number (367037073674).

Almost surely, 2^{1101111221019} is an apocalyptic number.

1101111221019 is a deficient number, since it is larger than the sum of its proper divisors (367037073677).

1101111221019 is an equidigital number, since it uses as much as digits as its factorization.

1101111221019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367037073676.

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

The spelling of 1101111221019 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, nineteen".