1223073215445 has 8 divisors (see below), whose sum is σ = 1956917144736. Its totient is φ = 652305714896.

The previous prime is 1223073215401. The next prime is 1223073215461. The reversal of 1223073215445 is 5445123703221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223073215445 - 2⁹ = 1223073214933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40769107167 + ... + 40769107196.

It is an arithmetic number, because the mean of its divisors is an integer number (244614643092).

Almost surely, 2^{1223073215445} is an apocalyptic number.

1223073215445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223073215445 is a deficient number, since it is larger than the sum of its proper divisors (733843929291).

1223073215445 is an equidigital number, since it uses as much as digits as its factorization.

1223073215445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81538214371.

The product of its (nonzero) digits is 201600, while the sum is 39.

Adding to 1223073215445 its reverse (5445123703221), we get a palindrome (6668196918666).

The spelling of 1223073215445 in words is "one trillion, two hundred twenty-three billion, seventy-three million, two hundred fifteen thousand, four hundred forty-five".