11111221244443 has 8 divisors (see below), whose sum is σ = 11161945907712. Its totient is φ = 11060512165416.

The previous prime is 11111221244423. The next prime is 11111221244471. The reversal of 11111221244443 is 34444212211111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111221244443 - 2¹³ = 11111221236251 is a prime.

It is a super-2 number, since 2×11111221244443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111221244423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465655 + ... + 5319952.

It is an arithmetic number, because the mean of its divisors is an integer number (1395243238464).

Almost surely, 2^{11111221244443} is an apocalyptic number.

11111221244443 is a deficient number, since it is larger than the sum of its proper divisors (50724663269).

11111221244443 is an equidigital number, since it uses as much as digits as its factorization.

11111221244443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792121.

The product of its digits is 6144, while the sum is 31.

Adding to 11111221244443 its reverse (34444212211111), we get a palindrome (45555433455554).

The spelling of 11111221244443 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred forty-four thousand, four hundred forty-three".