1228401123445 has 8 divisors (see below), whose sum is σ = 1477870762680. Its totient is φ = 980194622400.

The previous prime is 1228401123409. The next prime is 1228401123449. The reversal of 1228401123445 is 5443211048221.

It can be written as a sum of positive squares in 4 ways, for example, as 245610439281 + 982790684164 = 495591^2 + 991358^2 .

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

It is not a de Polignac number, because 1228401123445 - 2⁹ = 1228401122933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228401123449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315782406 + ... + 315786295.

It is an arithmetic number, because the mean of its divisors is an integer number (184733845335).

Almost surely, 2^{1228401123445} is an apocalyptic number.

It is an amenable number.

1228401123445 is a deficient number, since it is larger than the sum of its proper divisors (249469639235).

1228401123445 is an equidigital number, since it uses as much as digits as its factorization.

1228401123445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631569095.

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 1228401123445 in words is "one trillion, two hundred twenty-eight billion, four hundred one million, one hundred twenty-three thousand, four hundred forty-five".