20102001010997 has 2 divisors, whose sum is σ = 20102001010998. Its totient is φ = 20102001010996.

The previous prime is 20102001010967. The next prime is 20102001011003. The reversal of 20102001010997 is 79901010020102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18220382509156 + 1881618501841 = 4268534^2 + 1371721^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102001010997 - 2³⁴ = 20084821141813 is a prime.

It is a super-2 number, since 2×20102001010997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102001010957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051000505498 + 10051000505499.

It is an arithmetic number, because the mean of its divisors is an integer number (10051000505499).

Almost surely, 2^{20102001010997} is an apocalyptic number.

It is an amenable number.

20102001010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102001010997 is an equidigital number, since it uses as much as digits as its factorization.

20102001010997 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.

The spelling of 20102001010997 in words is "twenty trillion, one hundred two billion, one million, ten thousand, nine hundred ninety-seven".