1223250442445 has 16 divisors (see below), whose sum is σ = 1505648459952. Its totient is φ = 953496829440.

The previous prime is 1223250442433. The next prime is 1223250442451. The reversal of 1223250442445 is 5442440523221.

It can be written as a sum of positive squares in 8 ways, for example, as 511835792329 + 711414650116 = 715427^2 + 843454^2 .

It is not a de Polignac number, because 1223250442445 - 2⁴ = 1223250442429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223250442399 and 1223250442408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3701222 + ... + 4018151.

It is an arithmetic number, because the mean of its divisors is an integer number (94103028747).

Almost surely, 2^{1223250442445} is an apocalyptic number.

It is an amenable number.

1223250442445 is a deficient number, since it is larger than the sum of its proper divisors (282398017507).

1223250442445 is an equidigital number, since it uses as much as digits as its factorization.

1223250442445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720192.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 1223250442445 its reverse (5442440523221), we get a palindrome (6665690965666).

The spelling of 1223250442445 in words is "one trillion, two hundred twenty-three billion, two hundred fifty million, four hundred forty-two thousand, four hundred forty-five".