1111221443023 has 2 divisors, whose sum is σ = 1111221443024. Its totient is φ = 1111221443022.

The previous prime is 1111221443021. The next prime is 1111221443053. The reversal of 1111221443023 is 3203441221111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111221443023 - 2¹ = 1111221443021 is a prime.

Together with 1111221443021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111221443021) 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 as a sum of consecutive naturals, namely, 555610721511 + 555610721512.

It is an arithmetic number, because the mean of its divisors is an integer number (555610721512).

Almost surely, 2^{1111221443023} is an apocalyptic number.

1111221443023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111221443023 is an equidigital number, since it uses as much as digits as its factorization.

1111221443023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1111221443023 its reverse (3203441221111), we get a palindrome (4314662664134).

The spelling of 1111221443023 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, four hundred forty-three thousand, twenty-three".