100021100203 has 2 divisors, whose sum is σ = 100021100204. Its totient is φ = 100021100202.

The previous prime is 100021100191. The next prime is 100021100269. The reversal of 100021100203 is 302001120001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100021100203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100021100203.

It is not a weakly prime, because it can be changed into another prime (100021400203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010550101 + 50010550102.

It is an arithmetic number, because the mean of its divisors is an integer number (50010550102).

Almost surely, 2^100021100203 is an apocalyptic number.

100021100203 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021100203 is an equidigital number, since it uses as much as digits as its factorization.

100021100203 is an evil number, because the sum of its binary digits is even.

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

Adding to 100021100203 its reverse (302001120001), we get a palindrome (402022220204).

The spelling of 100021100203 in words is "one hundred billion, twenty-one million, one hundred thousand, two hundred three".