10203111109 has 2 divisors, whose sum is σ = 10203111110. Its totient is φ = 10203111108.

The previous prime is 10203111101. The next prime is 10203111179. The reversal of 10203111109 is 90111130201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9133624900 + 1069486209 = 95570^2 + 32703^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203111109 - 2³ = 10203111101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101555554 + 5101555555.

It is an arithmetic number, because the mean of its divisors is an integer number (5101555555).

Almost surely, 2^10203111109 is an apocalyptic number.

It is an amenable number.

10203111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203111109 is an equidigital number, since it uses as much as digits as its factorization.

10203111109 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 19.

The spelling of 10203111109 in words is "ten billion, two hundred three million, one hundred eleven thousand, one hundred nine".