22235112555521 has 4 divisors (see below), whose sum is σ = 22235508275412. Its totient is φ = 22234716835632.

The previous prime is 22235112555517. The next prime is 22235112555577. The reversal of 22235112555521 is 12555521153222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 774639378496 + 21460473177025 = 880136^2 + 4632545^2 .

It is a cyclic number.

It is not a de Polignac number, because 22235112555521 - 2² = 22235112555517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22235112555421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197775650 + ... + 197888043.

It is an arithmetic number, because the mean of its divisors is an integer number (5558877068853).

Almost surely, 2^{22235112555521} is an apocalyptic number.

It is an amenable number.

22235112555521 is a deficient number, since it is larger than the sum of its proper divisors (395719891).

22235112555521 is an equidigital number, since it uses as much as digits as its factorization.

22235112555521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395719890.

The product of its digits is 300000, while the sum is 41.

The spelling of 22235112555521 in words is "twenty-two trillion, two hundred thirty-five billion, one hundred twelve million, five hundred fifty-five thousand, five hundred twenty-one".