1220022109 has 2 divisors, whose sum is σ = 1220022110. Its totient is φ = 1220022108.

The previous prime is 1220022107. The next prime is 1220022121. The reversal of 1220022109 is 9012200221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625150009 + 594872100 = 25003^2 + 24390^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220022109 - 2¹ = 1220022107 is a prime.

Together with 1220022107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220022103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610011054 + 610011055.

It is an arithmetic number, because the mean of its divisors is an integer number (610011055).

Almost surely, 2^1220022109 is an apocalyptic number.

It is an amenable number.

1220022109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220022109 is an equidigital number, since it uses as much as digits as its factorization.

1220022109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1220022109 is about 34928.8148811264. The cubic root of 1220022109 is about 1068.5361847885.

The spelling of 1220022109 in words is "one billion, two hundred twenty million, twenty-two thousand, one hundred nine".