1020211 has 4 divisors (see below), whose sum is σ = 1064592. Its totient is φ = 975832.

The previous prime is 1020163. The next prime is 1020223. The reversal of 1020211 is 1120201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120201 = 139 ⋅8059.

It is a cyclic number.

It is not a de Polignac number, because 1020211 - 2⁹ = 1019699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020194 and 1020203.

It is not an unprimeable number, because it can be changed into a prime (1020011) 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 in 3 ways as a sum of consecutive naturals, for example, 22156 + ... + 22201.

It is an arithmetic number, because the mean of its divisors is an integer number (266148).

2^1020211 is an apocalyptic number.

1020211 is a deficient number, since it is larger than the sum of its proper divisors (44381).

1020211 is an equidigital number, since it uses as much as digits as its factorization.

1020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44380.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1020211 is about 1010.0549490003. The cubic root of 1020211 is about 100.6692115687.

Adding to 1020211 its reverse (1120201), we get a palindrome (2140412).

The spelling of 1020211 in words is "one million, twenty thousand, two hundred eleven".