100021012003 has 4 divisors (see below), whose sum is σ = 109113831288. Its totient is φ = 90928192720.

The previous prime is 100021012001. The next prime is 100021012009. The reversal of 100021012003 is 300210120001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300210120001 = 11 ⋅27291829091.

It is a cyclic number.

It is not a de Polignac number, because 100021012003 - 2¹ = 100021012001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100021012001) 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, 4546409626 + ... + 4546409647.

It is an arithmetic number, because the mean of its divisors is an integer number (27278457822).

Almost surely, 2^100021012003 is an apocalyptic number.

100021012003 is a deficient number, since it is larger than the sum of its proper divisors (9092819285).

100021012003 is an equidigital number, since it uses as much as digits as its factorization.

100021012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092819284.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 100021012003 its reverse (300210120001), we get a palindrome (400231132004).

The spelling of 100021012003 in words is "one hundred billion, twenty-one million, twelve thousand, three".