1000203003101 has 2 divisors, whose sum is σ = 1000203003102. Its totient is φ = 1000203003100.

The previous prime is 1000203003097. The next prime is 1000203003113. The reversal of 1000203003101 is 1013003020001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 882145479076 + 118057524025 = 939226^2 + 343595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000203003101 - 2² = 1000203003097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000203003161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500101501550 + 500101501551.

It is an arithmetic number, because the mean of its divisors is an integer number (500101501551).

Almost surely, 2^{1000203003101} is an apocalyptic number.

It is an amenable number.

1000203003101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000203003101 is an equidigital number, since it uses as much as digits as its factorization.

1000203003101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 1000203003101 its reverse (1013003020001), we get a palindrome (2013206023102).

The spelling of 1000203003101 in words is "one trillion, two hundred three million, three thousand, one hundred one".