100021031203 has 4 divisors (see below), whose sum is σ = 100037743560. Its totient is φ = 100004318848.

The previous prime is 100021031191. The next prime is 100021031221. The reversal of 100021031203 is 302130120001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302130120001 = 22013 ⋅13725077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100021031203 is a prime.

It is a super-4 number, since 4×100021031203⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100021001203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8347198 + ... + 8359171.

It is an arithmetic number, because the mean of its divisors is an integer number (25009435890).

Almost surely, 2^100021031203 is an apocalyptic number.

100021031203 is a deficient number, since it is larger than the sum of its proper divisors (16712357).

100021031203 is an equidigital number, since it uses as much as digits as its factorization.

100021031203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16712356.

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

Adding to 100021031203 its reverse (302130120001), we get a palindrome (402151151204).

The spelling of 100021031203 in words is "one hundred billion, twenty-one million, thirty-one thousand, two hundred three".