1201022309 has 2 divisors, whose sum is σ = 1201022310. Its totient is φ = 1201022308.

The previous prime is 1201022299. The next prime is 1201022311. The reversal of 1201022309 is 9032201021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184392225 + 16630084 = 34415^2 + 4078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201022309 is a prime.

Together with 1201022311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201022399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600511154 + 600511155.

It is an arithmetic number, because the mean of its divisors is an integer number (600511155).

Almost surely, 2^1201022309 is an apocalyptic number.

It is an amenable number.

1201022309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201022309 is an equidigital number, since it uses as much as digits as its factorization.

1201022309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1201022309 is about 34655.7687694271. The cubic root of 1201022309 is about 1062.9602517006.

The spelling of 1201022309 in words is "one billion, two hundred one million, twenty-two thousand, three hundred nine".