1223254155145 has 24 divisors (see below), whose sum is σ = 1612027751040. Its totient is φ = 883746828000.

The previous prime is 1223254155139. The next prime is 1223254155203. The reversal of 1223254155145 is 5415514523221.

It is not a de Polignac number, because 1223254155145 - 2⁵ = 1223254155113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223254155098 and 1223254155107.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 766336 + ... + 1741774.

It is an arithmetic number, because the mean of its divisors is an integer number (67167822960).

Almost surely, 2^{1223254155145} is an apocalyptic number.

It is an amenable number.

1223254155145 is a deficient number, since it is larger than the sum of its proper divisors (388773595895).

1223254155145 is an equidigital number, since it uses as much as digits as its factorization.

1223254155145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975757 (or 975606 counting only the distinct ones).

The product of its digits is 240000, while the sum is 40.

Adding to 1223254155145 its reverse (5415514523221), we get a palindrome (6638768678366).

The spelling of 1223254155145 in words is "one trillion, two hundred twenty-three billion, two hundred fifty-four million, one hundred fifty-five thousand, one hundred forty-five".