1000002100203 has 12 divisors (see below), whose sum is σ = 1448218886400. Its totient is φ = 664927416816.

The previous prime is 1000002100183. The next prime is 1000002100243. The reversal of 1000002100203 is 3020012000001.

It is a happy number.

It is not a de Polignac number, because 1000002100203 - 2⁸ = 1000002099947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000002100243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145050528 + ... + 145057421.

It is an arithmetic number, because the mean of its divisors is an integer number (120684907200).

Almost surely, 2^{1000002100203} is an apocalyptic number.

1000002100203 is a deficient number, since it is larger than the sum of its proper divisors (448216786197).

1000002100203 is a wasteful number, since it uses less digits than its factorization.

1000002100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290108338 (or 290108335 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 1000002100203 its reverse (3020012000001), we get a palindrome (4020014100204).

The spelling of 1000002100203 in words is "one trillion, two million, one hundred thousand, two hundred three".