20002012112009 has 2 divisors, whose sum is σ = 20002012112010. Its totient is φ = 20002012112008.

The previous prime is 20002012111987. The next prime is 20002012112041. The reversal of 20002012112009 is 90021121020002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15514618099600 + 4487394012409 = 3938860^2 + 2118347^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002012112009 - 2²⁴ = 20001995334793 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002012112309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001006056004 + 10001006056005.

It is an arithmetic number, because the mean of its divisors is an integer number (10001006056005).

Almost surely, 2^{20002012112009} is an apocalyptic number.

It is an amenable number.

20002012112009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002012112009 is an equidigital number, since it uses as much as digits as its factorization.

20002012112009 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 20.

The spelling of 20002012112009 in words is "twenty trillion, two billion, twelve million, one hundred twelve thousand, nine".