10203012011209 has 2 divisors, whose sum is σ = 10203012011210. Its totient is φ = 10203012011208.

The previous prime is 10203012011197. The next prime is 10203012011243. The reversal of 10203012011209 is 90211021030201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10100065363600 + 102946647609 = 3178060^2 + 320853^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203012011209 - 2¹¹ = 10203012009161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10203012011209.

It is not a weakly prime, because it can be changed into another prime (10203012011299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101506005604 + 5101506005605.

It is an arithmetic number, because the mean of its divisors is an integer number (5101506005605).

Almost surely, 2^{10203012011209} is an apocalyptic number.

It is an amenable number.

10203012011209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203012011209 is an equidigital number, since it uses as much as digits as its factorization.

10203012011209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 10203012011209 in words is "ten trillion, two hundred three billion, twelve million, eleven thousand, two hundred nine".