1021412209 has 2 divisors, whose sum is σ = 1021412210. Its totient is φ = 1021412208.

The previous prime is 1021412191. The next prime is 1021412303. The reversal of 1021412209 is 9022141201.

1021412209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935442225 + 85969984 = 30585^2 + 9272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021412209 - 2¹⁹ = 1020887921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021412209.

It is not a weakly prime, because it can be changed into another prime (1021412009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510706104 + 510706105.

It is an arithmetic number, because the mean of its divisors is an integer number (510706105).

Almost surely, 2^1021412209 is an apocalyptic number.

It is an amenable number.

1021412209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021412209 is an equidigital number, since it uses as much as digits as its factorization.

1021412209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1021412209 is about 31959.5401875559. The cubic root of 1021412209 is about 1007.0870579571.

The spelling of 1021412209 in words is "one billion, twenty-one million, four hundred twelve thousand, two hundred nine".