2021102012003 has 4 divisors (see below), whose sum is σ = 2021297846568. Its totient is φ = 2020906177440.

The previous prime is 2021102011997. The next prime is 2021102012063. The reversal of 2021102012003 is 3002102011202.

It is a happy number.

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 2021102012003 - 2⁴ = 2021102011987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021102012063) 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, 97901801 + ... + 97922442.

It is an arithmetic number, because the mean of its divisors is an integer number (505324461642).

Almost surely, 2^{2021102012003} is an apocalyptic number.

2021102012003 is a deficient number, since it is larger than the sum of its proper divisors (195834565).

2021102012003 is a wasteful number, since it uses less digits than its factorization.

2021102012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195834564.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2021102012003 its reverse (3002102011202), we get a palindrome (5023204023205).

The spelling of 2021102012003 in words is "two trillion, twenty-one billion, one hundred two million, twelve thousand, three".