1222445220245 has 4 divisors (see below), whose sum is σ = 1466934264300. Its totient is φ = 977956176192.

The previous prime is 1222445220203. The next prime is 1222445220247. The reversal of 1222445220245 is 5420225442221.

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 664195660324 + 558249559921 = 814982^2 + 747161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222445220245 - 2¹⁶ = 1222445154709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222445220247) 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, 122244522020 + ... + 122244522029.

It is an arithmetic number, because the mean of its divisors is an integer number (366733566075).

Almost surely, 2^{1222445220245} is an apocalyptic number.

It is an amenable number.

1222445220245 is a deficient number, since it is larger than the sum of its proper divisors (244489044055).

1222445220245 is an equidigital number, since it uses as much as digits as its factorization.

1222445220245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244489044054.

The product of its (nonzero) digits is 102400, while the sum is 35.

The spelling of 1222445220245 in words is "one trillion, two hundred twenty-two billion, four hundred forty-five million, two hundred twenty thousand, two hundred forty-five".