1022122109 has 2 divisors, whose sum is σ = 1022122110. Its totient is φ = 1022122108.

The previous prime is 1022122099. The next prime is 1022122181. The reversal of 1022122109 is 9012212201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022080900 + 41209 = 31970^2 + 203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022122109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022122609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511061054 + 511061055.

It is an arithmetic number, because the mean of its divisors is an integer number (511061055).

Almost surely, 2^1022122109 is an apocalyptic number.

It is an amenable number.

1022122109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022122109 is an equidigital number, since it uses as much as digits as its factorization.

1022122109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1022122109 is about 31970.6444883427. The cubic root of 1022122109 is about 1007.3203185121.

The spelling of 1022122109 in words is "one billion, twenty-two million, one hundred twenty-two thousand, one hundred nine".