1001230020971 has 2 divisors, whose sum is σ = 1001230020972. Its totient is φ = 1001230020970.

The previous prime is 1001230020937. The next prime is 1001230021021. The reversal of 1001230020971 is 1790200321001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001230020971 - 2¹⁸ = 1001229758827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001230020971.

It is not a weakly prime, because it can be changed into another prime (1001220020971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500615010485 + 500615010486.

It is an arithmetic number, because the mean of its divisors is an integer number (500615010486).

Almost surely, 2^{1001230020971} is an apocalyptic number.

1001230020971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001230020971 is an equidigital number, since it uses as much as digits as its factorization.

1001230020971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

Adding to 1001230020971 its reverse (1790200321001), we get a palindrome (2791430341972).

The spelling of 1001230020971 in words is "one trillion, one billion, two hundred thirty million, twenty thousand, nine hundred seventy-one".