1022612209 has 2 divisors, whose sum is σ = 1022612210. Its totient is φ = 1022612208.

The previous prime is 1022612189. The next prime is 1022612231. The reversal of 1022612209 is 9022162201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 562638400 + 459973809 = 23720^2 + 21447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022612209 - 2⁷ = 1022612081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022616209) 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, 511306104 + 511306105.

It is an arithmetic number, because the mean of its divisors is an integer number (511306105).

Almost surely, 2^1022612209 is an apocalyptic number.

It is an amenable number.

1022612209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022612209 is an equidigital number, since it uses as much as digits as its factorization.

1022612209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1022612209 is about 31978.3084136732. The cubic root of 1022612209 is about 1007.4812936696.

The spelling of 1022612209 in words is "one billion, twenty-two million, six hundred twelve thousand, two hundred nine".