1123421033145 has 32 divisors (see below), whose sum is σ = 1903321065600. Its totient is φ = 563879623680.

The previous prime is 1123421033129. The next prime is 1123421033173. The reversal of 1123421033145 is 5413301243211.

It is not a de Polignac number, because 1123421033145 - 2⁴ = 1123421033129 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4460031 + ... + 4705179.

It is an arithmetic number, because the mean of its divisors is an integer number (59478783300).

Almost surely, 2^{1123421033145} is an apocalyptic number.

1123421033145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123421033145 is a deficient number, since it is larger than the sum of its proper divisors (779900032455).

1123421033145 is a wasteful number, since it uses less digits than its factorization.

1123421033145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263145.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1123421033145 its reverse (5413301243211), we get a palindrome (6536722276356).

The spelling of 1123421033145 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-one million, thirty-three thousand, one hundred forty-five".