111222445557 has 8 divisors (see below), whose sum is σ = 148298889280. Its totient is φ = 74147149440.

The previous prime is 111222445553. The next prime is 111222445571. The reversal of 111222445557 is 755544222111.

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

It is not a de Polignac number, because 111222445557 - 2² = 111222445553 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222445553) 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, 27169 + ... + 472422.

It is an arithmetic number, because the mean of its divisors is an integer number (18537361160).

Almost surely, 2^111222445557 is an apocalyptic number.

It is an amenable number.

111222445557 is a deficient number, since it is larger than the sum of its proper divisors (37076443723).

111222445557 is an equidigital number, since it uses as much as digits as its factorization.

111222445557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573803.

The product of its digits is 112000, while the sum is 39.

Adding to 111222445557 its reverse (755544222111), we get a palindrome (866766667668).

The spelling of 111222445557 in words is "one hundred eleven billion, two hundred twenty-two million, four hundred forty-five thousand, five hundred fifty-seven".