1020011031001 has 2 divisors, whose sum is σ = 1020011031002. Its totient is φ = 1020011031000.

The previous prime is 1020011030999. The next prime is 1020011031007. The reversal of 1020011031001 is 1001301100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540150032601 + 479860998400 = 734949^2 + 692720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020011031001 - 2¹ = 1020011030999 is a prime.

Together with 1020011030999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1020011031007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510005515500 + 510005515501.

It is an arithmetic number, because the mean of its divisors is an integer number (510005515501).

Almost surely, 2^{1020011031001} is an apocalyptic number.

It is an amenable number.

1020011031001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020011031001 is an equidigital number, since it uses as much as digits as its factorization.

1020011031001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 1020011031001 its reverse (1001301100201), we get a palindrome (2021312131202).

The spelling of 1020011031001 in words is "one trillion, twenty billion, eleven million, thirty-one thousand, one".