10120204009 has 2 divisors, whose sum is σ = 10120204010. Its totient is φ = 10120204008.

The previous prime is 10120204001. The next prime is 10120204013. The reversal of 10120204009 is 90040202101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7769893609 + 2350310400 = 88147^2 + 48480^2 .

It is an emirp because it is prime and its reverse (90040202101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10120204009 - 2³ = 10120204001 is a prime.

It is not a weakly prime, because it can be changed into another prime (10120204001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060102004 + 5060102005.

It is an arithmetic number, because the mean of its divisors is an integer number (5060102005).

Almost surely, 2^10120204009 is an apocalyptic number.

It is an amenable number.

10120204009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120204009 is an equidigital number, since it uses as much as digits as its factorization.

10120204009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 10120204009 in words is "ten billion, one hundred twenty million, two hundred four thousand, nine".