20012101000897 has 2 divisors, whose sum is σ = 20012101000898. Its totient is φ = 20012101000896.

The previous prime is 20012101000847. The next prime is 20012101001153. The reversal of 20012101000897 is 79800010121002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17229339878976 + 2782761121921 = 4150824^2 + 1668161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20012101000897 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012101000807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006050500448 + 10006050500449.

It is an arithmetic number, because the mean of its divisors is an integer number (10006050500449).

Almost surely, 2^{20012101000897} is an apocalyptic number.

It is an amenable number.

20012101000897 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012101000897 is an equidigital number, since it uses as much as digits as its factorization.

20012101000897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

Adding to 20012101000897 its reverse (79800010121002), we get a palindrome (99812111121899).

The spelling of 20012101000897 in words is "twenty trillion, twelve billion, one hundred one million, eight hundred ninety-seven", and thus it is an aban number.