2001120010997 has 2 divisors, whose sum is σ = 2001120010998. Its totient is φ = 2001120010996.

The previous prime is 2001120010973. The next prime is 2001120011039. The reversal of 2001120010997 is 7990100211002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1428715793521 + 572404217476 = 1195289^2 + 756574^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001120010997 - 2²⁶ = 2001052902133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001128010997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000560005498 + 1000560005499.

It is an arithmetic number, because the mean of its divisors is an integer number (1000560005499).

Almost surely, 2^{2001120010997} is an apocalyptic number.

It is an amenable number.

2001120010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001120010997 is an equidigital number, since it uses as much as digits as its factorization.

2001120010997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

Adding to 2001120010997 its reverse (7990100211002), we get a palindrome (9991220221999).

The spelling of 2001120010997 in words is "two trillion, one billion, one hundred twenty million, ten thousand, nine hundred ninety-seven".