22011002009 has 2 divisors, whose sum is σ = 22011002010. Its totient is φ = 22011002008.

The previous prime is 22011001973. The next prime is 22011002017. The reversal of 22011002009 is 90020011022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12485827600 + 9525174409 = 111740^2 + 97597^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011002009 - 2¹² = 22010997913 is a prime.

It is not a weakly prime, because it can be changed into another prime (22011001009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005501004 + 11005501005.

It is an arithmetic number, because the mean of its divisors is an integer number (11005501005).

Almost surely, 2^22011002009 is an apocalyptic number.

It is an amenable number.

22011002009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011002009 is an equidigital number, since it uses as much as digits as its factorization.

22011002009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 22011002009 in words is "twenty-two billion, eleven million, two thousand, nine".