201001100903 has 2 divisors, whose sum is σ = 201001100904. Its totient is φ = 201001100902.

The previous prime is 201001100899. The next prime is 201001100999. The reversal of 201001100903 is 309001100102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201001100903 - 2² = 201001100899 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201001100303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500550451 + 100500550452.

It is an arithmetic number, because the mean of its divisors is an integer number (100500550452).

Almost surely, 2^201001100903 is an apocalyptic number.

201001100903 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001100903 is an equidigital number, since it uses as much as digits as its factorization.

201001100903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The spelling of 201001100903 in words is "two hundred one billion, one million, one hundred thousand, nine hundred three".