1222201222245 has 16 divisors (see below), whose sum is σ = 2172802173120. Its totient is φ = 651840651792.

The previous prime is 1222201222201. The next prime is 1222201222303. The reversal of 1222201222245 is 5422221022221.

It is not a de Polignac number, because 1222201222245 - 2¹⁰ = 1222201221221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4526671059 + ... + 4526671328.

It is an arithmetic number, because the mean of its divisors is an integer number (135800135820).

Almost surely, 2^{1222201222245} is an apocalyptic number.

1222201222245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222201222245 is a deficient number, since it is larger than the sum of its proper divisors (950600950875).

1222201222245 is an equidigital number, since it uses as much as digits as its factorization.

1222201222245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9053342401 (or 9053342395 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 1222201222245 its reverse (5422221022221), we get a palindrome (6644422244466).

The spelling of 1222201222245 in words is "one trillion, two hundred twenty-two billion, two hundred one million, two hundred twenty-two thousand, two hundred forty-five".