100203103021 has 16 divisors (see below), whose sum is σ = 115140541824. Its totient is φ = 85421657664.

The previous prime is 100203102949. The next prime is 100203103037. The reversal of 100203103021 is 120301302001.

It is not a de Polignac number, because 100203103021 - 2⁷ = 100203102893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100203102992 and 100203103010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100203103321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4350291 + ... + 4373263.

It is an arithmetic number, because the mean of its divisors is an integer number (7196283864).

Almost surely, 2^100203103021 is an apocalyptic number.

It is an amenable number.

100203103021 is a deficient number, since it is larger than the sum of its proper divisors (14937438803).

100203103021 is a wasteful number, since it uses less digits than its factorization.

100203103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26340.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 100203103021 its reverse (120301302001), we get a palindrome (220504405022).

The spelling of 100203103021 in words is "one hundred billion, two hundred three million, one hundred three thousand, twenty-one".