111220013425 has 6 divisors (see below), whose sum is σ = 137912816678. Its totient is φ = 88976010720.

The previous prime is 111220013381. The next prime is 111220013441. The reversal of 111220013425 is 524310022111.

It can be written as a sum of positive squares in 3 ways, for example, as 113124496 + 111106888929 = 10636^2 + 333327^2 .

It is not a de Polignac number, because 111220013425 - 2⁹ = 111220012913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220013396 and 111220013405.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2224400244 + ... + 2224400293.

Almost surely, 2^111220013425 is an apocalyptic number.

It is an amenable number.

111220013425 is a deficient number, since it is larger than the sum of its proper divisors (26692803253).

111220013425 is an equidigital number, since it uses as much as digits as its factorization.

111220013425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448800547 (or 4448800542 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 111220013425 its reverse (524310022111), we get a palindrome (635530035536).

The spelling of 111220013425 in words is "one hundred eleven billion, two hundred twenty million, thirteen thousand, four hundred twenty-five".