20201201010997 has 2 divisors, whose sum is σ = 20201201010998. Its totient is φ = 20201201010996.

The previous prime is 20201201010973. The next prime is 20201201011031. The reversal of 20201201010997 is 79901010210202.

It is a happy number.

It is an a-pointer prime, because the next prime (20201201011031) can be obtained adding 20201201010997 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10497172324356 + 9704028686641 = 3239934^2 + 3115129^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201201010997 - 2⁴³ = 11405107988789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201201011997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100600505498 + 10100600505499.

It is an arithmetic number, because the mean of its divisors is an integer number (10100600505499).

Almost surely, 2^{20201201010997} is an apocalyptic number.

It is an amenable number.

20201201010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201201010997 is an equidigital number, since it uses as much as digits as its factorization.

20201201010997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 20201201010997 in words is "twenty trillion, two hundred one billion, two hundred one million, ten thousand, nine hundred ninety-seven".