1020011 has 2 divisors, whose sum is σ = 1020012. Its totient is φ = 1020010.

The previous prime is 1020007. The next prime is 1020013. The reversal of 1020011 is 1100201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020011 - 2² = 1020007 is a prime.

Together with 1020013, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1019977 and 1020004.

It is not a weakly prime, because it can be changed into another prime (1020013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510005 + 510006.

It is an arithmetic number, because the mean of its divisors is an integer number (510006).

2^1020011 is an apocalyptic number.

1020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020011 is an equidigital number, since it uses as much as digits as its factorization.

1020011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1020011 is about 1009.9559396330. The cubic root of 1020011 is about 100.6626328125.

Adding to 1020011 its reverse (1100201), we get a palindrome (2120212).

Multiplying 1020011 by its reverse (1100201), we get a palindrome (1122217122211).

The spelling of 1020011 in words is "one million, twenty thousand, eleven".