12220255105 has 8 divisors (see below), whose sum is σ = 15060638952. Its totient is φ = 9511982208.

The previous prime is 12220255081. The next prime is 12220255127. The reversal of 12220255105 is 50155202221.

It can be written as a sum of positive squares in 4 ways, for example, as 7394452081 + 4825803024 = 85991^2 + 69468^2 .

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 12220255105 - 2¹⁵ = 12220222337 is a prime.

It is a super-2 number, since 2×12220255105² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12220255105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33027532 + ... + 33027901.

It is an arithmetic number, because the mean of its divisors is an integer number (1882579869).

Almost surely, 2^12220255105 is an apocalyptic number.

It is an amenable number.

12220255105 is a deficient number, since it is larger than the sum of its proper divisors (2840383847).

12220255105 is an equidigital number, since it uses as much as digits as its factorization.

12220255105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66055475.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 12220255105 its reverse (50155202221), we get a palindrome (62375457326).

The spelling of 12220255105 in words is "twelve billion, two hundred twenty million, two hundred fifty-five thousand, one hundred five".