1020213217 has 2 divisors, whose sum is σ = 1020213218. Its totient is φ = 1020213216.

The previous prime is 1020213199. The next prime is 1020213241. The reversal of 1020213217 is 7123120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772339681 + 247873536 = 27791^2 + 15744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020213217 - 2¹¹ = 1020211169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020213194 and 1020213203.

It is not a weakly prime, because it can be changed into another prime (1020211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510106608 + 510106609.

It is an arithmetic number, because the mean of its divisors is an integer number (510106609).

Almost surely, 2^1020213217 is an apocalyptic number.

It is an amenable number.

1020213217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020213217 is an equidigital number, since it uses as much as digits as its factorization.

1020213217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1020213217 is about 31940.7767125347. The cubic root of 1020213217 is about 1006.6928448937.

Adding to 1020213217 its reverse (7123120201), we get a palindrome (8143333418).

The spelling of 1020213217 in words is "one billion, twenty million, two hundred thirteen thousand, two hundred seventeen".