1220011002109 has 2 divisors, whose sum is σ = 1220011002110. Its totient is φ = 1220011002108.

The previous prime is 1220011002073. The next prime is 1220011002157. The reversal of 1220011002109 is 9012001100221.

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., 1214851453209 + 5159548900 = 1102203^2 + 71830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220011002109 - 2¹⁵ = 1220010969341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220011702109) 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, 610005501054 + 610005501055.

It is an arithmetic number, because the mean of its divisors is an integer number (610005501055).

Almost surely, 2^{1220011002109} is an apocalyptic number.

It is an amenable number.

1220011002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220011002109 is an equidigital number, since it uses as much as digits as its factorization.

1220011002109 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 19.

The spelling of 1220011002109 in words is "one trillion, two hundred twenty billion, eleven million, two thousand, one hundred nine".