1020971011 has 2 divisors, whose sum is σ = 1020971012. Its totient is φ = 1020971010.

The previous prime is 1020971009. The next prime is 1020971027. The reversal of 1020971011 is 1101790201.

It is a weak prime.

It is an emirp because it is prime and its reverse (1101790201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020971011 - 2¹ = 1020971009 is a prime.

Together with 1020971009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1020971041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510485505 + 510485506.

It is an arithmetic number, because the mean of its divisors is an integer number (510485506).

Almost surely, 2^1020971011 is an apocalyptic number.

1020971011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020971011 is an equidigital number, since it uses as much as digits as its factorization.

1020971011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 1020971011 is about 31952.6369960290. The cubic root of 1020971011 is about 1006.9420336523.

The spelling of 1020971011 in words is "one billion, twenty million, nine hundred seventy-one thousand, eleven".