10020011001997 has 2 divisors, whose sum is σ = 10020011001998. Its totient is φ = 10020011001996.

The previous prime is 10020011001989. The next prime is 10020011002013. The reversal of 10020011001997 is 79910011002001.

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., 7210143299241 + 2809867702756 = 2685171^2 + 1676266^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020011001997 - 2³ = 10020011001989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020011001947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010005500998 + 5010005500999.

It is an arithmetic number, because the mean of its divisors is an integer number (5010005500999).

Almost surely, 2^{10020011001997} is an apocalyptic number.

It is an amenable number.

10020011001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020011001997 is an equidigital number, since it uses as much as digits as its factorization.

10020011001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 31.

Adding to 10020011001997 its reverse (79910011002001), we get a palindrome (89930022003998).

The spelling of 10020011001997 in words is "ten trillion, twenty billion, eleven million, one thousand, nine hundred ninety-seven".