10402011202109 has 2 divisors, whose sum is σ = 10402011202110. Its totient is φ = 10402011202108.

The previous prime is 10402011202103. The next prime is 10402011202117. The reversal of 10402011202109 is 90120211020401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6976217410009 + 3425793792100 = 2641253^2 + 1850890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10402011202109 is a prime.

It is a super-2 number, since 2×10402011202109² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10402011202103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201005601054 + 5201005601055.

It is an arithmetic number, because the mean of its divisors is an integer number (5201005601055).

Almost surely, 2^{10402011202109} is an apocalyptic number.

It is an amenable number.

10402011202109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402011202109 is an equidigital number, since it uses as much as digits as its factorization.

10402011202109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 10402011202109 in words is "ten trillion, four hundred two billion, eleven million, two hundred two thousand, one hundred nine".