210020112110009 has 2 divisors, whose sum is σ = 210020112110010. Its totient is φ = 210020112110008.

The previous prime is 210020112109943. The next prime is 210020112110069. The reversal of 210020112110009 is 900011211020012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114454628532409 + 95565483577600 = 10698347^2 + 9775760^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020112110009 - 2³² = 210015817142713 is a prime.

It is not a weakly prime, because it can be changed into another prime (210020112110069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010056055004 + 105010056055005.

It is an arithmetic number, because the mean of its divisors is an integer number (105010056055005).

Almost surely, 2^{210020112110009} is an apocalyptic number.

It is an amenable number.

210020112110009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020112110009 is an equidigital number, since it uses as much as digits as its factorization.

210020112110009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 210020112110009 in words is "two hundred ten trillion, twenty billion, one hundred twelve million, one hundred ten thousand, nine".