1111143221011 has 4 divisors (see below), whose sum is σ = 1138244275224. Its totient is φ = 1084042166800.

The previous prime is 1111143221003. The next prime is 1111143221029. The reversal of 1111143221011 is 1101223411111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111143221011 - 2³ = 1111143221003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111143221011.

It is not an unprimeable number, because it can be changed into a prime (1111143228011) 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, 13550527045 + ... + 13550527126.

It is an arithmetic number, because the mean of its divisors is an integer number (284561068806).

Almost surely, 2^{1111143221011} is an apocalyptic number.

1111143221011 is a deficient number, since it is larger than the sum of its proper divisors (27101054213).

1111143221011 is an equidigital number, since it uses as much as digits as its factorization.

1111143221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101054212.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 1111143221011 its reverse (1101223411111), we get a palindrome (2212366632122).

The spelling of 1111143221011 in words is "one trillion, one hundred eleven billion, one hundred forty-three million, two hundred twenty-one thousand, eleven".