1002223155145 has 4 divisors (see below), whose sum is σ = 1202667786180. Its totient is φ = 801778524112.

The previous prime is 1002223155133. The next prime is 1002223155151. The reversal of 1002223155145 is 5415513222001.

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 106648618041 + 895574537104 = 326571^2 + 946348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002223155145 - 2⁵ = 1002223155113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100222315510 + ... + 100222315519.

It is an arithmetic number, because the mean of its divisors is an integer number (300666946545).

Almost surely, 2^{1002223155145} is an apocalyptic number.

It is an amenable number.

1002223155145 is a deficient number, since it is larger than the sum of its proper divisors (200444631035).

1002223155145 is an equidigital number, since it uses as much as digits as its factorization.

1002223155145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200444631034.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1002223155145 its reverse (5415513222001), we get a palindrome (6417736377146).

The spelling of 1002223155145 in words is "one trillion, two billion, two hundred twenty-three million, one hundred fifty-five thousand, one hundred forty-five".