120021001001003 has 4 divisors (see below), whose sum is σ = 120021027810888. Its totient is φ = 120020974191120.

The previous prime is 120021001000993. The next prime is 120021001001039. The reversal of 120021001001003 is 300100100120021.

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

It is a cyclic number.

It is not a de Polignac number, because 120021001001003 - 2⁶ = 120021001000939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021001021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4884626 + ... + 16245047.

It is an arithmetic number, because the mean of its divisors is an integer number (30005256952722).

Almost surely, 2^{120021001001003} is an apocalyptic number.

120021001001003 is a deficient number, since it is larger than the sum of its proper divisors (26809885).

120021001001003 is an equidigital number, since it uses as much as digits as its factorization.

120021001001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26809884.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 120021001001003 its reverse (300100100120021), we get a palindrome (420121101121024).

The spelling of 120021001001003 in words is "one hundred twenty trillion, twenty-one billion, one million, one thousand, three".