1001423044121 has 4 divisors (see below), whose sum is σ = 1001631983412. Its totient is φ = 1001214104832.

The previous prime is 1001423044087. The next prime is 1001423044151. The reversal of 1001423044121 is 1214403241001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 336446401600 + 664976642521 = 580040^2 + 815461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001423044121 - 2³⁰ = 1000349302297 is a prime.

It is a super-2 number, since 2×1001423044121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001423044151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104462456 + ... + 104472041.

It is an arithmetic number, because the mean of its divisors is an integer number (250407995853).

Almost surely, 2^{1001423044121} is an apocalyptic number.

It is an amenable number.

1001423044121 is a deficient number, since it is larger than the sum of its proper divisors (208939291).

1001423044121 is an equidigital number, since it uses as much as digits as its factorization.

1001423044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208939290.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1001423044121 its reverse (1214403241001), we get a palindrome (2215826285122).

The spelling of 1001423044121 in words is "one trillion, one billion, four hundred twenty-three million, forty-four thousand, one hundred twenty-one".