20331010112209 has 2 divisors, whose sum is σ = 20331010112210. Its totient is φ = 20331010112208.

The previous prime is 20331010112183. The next prime is 20331010112279. The reversal of 20331010112209 is 90221101013302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15450127342225 + 4880882769984 = 3930665^2 + 2209272^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331010112209 - 2²⁹ = 20330473241297 is a prime.

It is a super-2 number, since 2×20331010112209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20331010112279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165505056104 + 10165505056105.

It is an arithmetic number, because the mean of its divisors is an integer number (10165505056105).

Almost surely, 2^{20331010112209} is an apocalyptic number.

It is an amenable number.

20331010112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331010112209 is an equidigital number, since it uses as much as digits as its factorization.

20331010112209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 20331010112209 in words is "twenty trillion, three hundred thirty-one billion, ten million, one hundred twelve thousand, two hundred nine".