12225438105553 has 4 divisors (see below), whose sum is σ = 12456106749108. Its totient is φ = 11994769462000.

The previous prime is 12225438105533. The next prime is 12225438105563. The reversal of 12225438105553 is 35550183452221.

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 5894543025424 + 6330895080129 = 2427868^2 + 2516127^2 .

It is a cyclic number.

It is not a de Polignac number, because 12225438105553 - 2⁵ = 12225438105521 is a prime.

It is a super-2 number, since 2×12225438105553² (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 (12225438105533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115334321698 + ... + 115334321803.

It is an arithmetic number, because the mean of its divisors is an integer number (3114026687277).

Almost surely, 2^{12225438105553} is an apocalyptic number.

It is an amenable number.

12225438105553 is a deficient number, since it is larger than the sum of its proper divisors (230668643555).

12225438105553 is an equidigital number, since it uses as much as digits as its factorization.

12225438105553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230668643554.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 12225438105553 in words is "twelve trillion, two hundred twenty-five billion, four hundred thirty-eight million, one hundred five thousand, five hundred fifty-three".