1011202100009 has 2 divisors, whose sum is σ = 1011202100010. Its totient is φ = 1011202100008.

The previous prime is 1011202099993. The next prime is 1011202100017. The reversal of 1011202100009 is 9000012021101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 983016726784 + 28185373225 = 991472^2 + 167885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011202100009 - 2⁴ = 1011202099993 is a prime.

It is a super-2 number, since 2×1011202100009² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011202100009.

It is not a weakly prime, because it can be changed into another prime (1011202100039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505601050004 + 505601050005.

It is an arithmetic number, because the mean of its divisors is an integer number (505601050005).

Almost surely, 2^{1011202100009} is an apocalyptic number.

It is an amenable number.

1011202100009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011202100009 is an equidigital number, since it uses as much as digits as its factorization.

1011202100009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1011202100009 in words is "one trillion, eleven billion, two hundred two million, one hundred thousand, nine".