1012210222109 has 2 divisors, whose sum is σ = 1012210222110. Its totient is φ = 1012210222108.

The previous prime is 1012210222099. The next prime is 1012210222183. The reversal of 1012210222109 is 9012220122101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931460474884 + 80749747225 = 965122^2 + 284165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012210222109 is a prime.

It is a super-2 number, since 2×1012210222109² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012210222189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105111054 + 506105111055.

It is an arithmetic number, because the mean of its divisors is an integer number (506105111055).

Almost surely, 2^{1012210222109} is an apocalyptic number.

It is an amenable number.

1012210222109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012210222109 is an equidigital number, since it uses as much as digits as its factorization.

1012210222109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 1012210222109 in words is "one trillion, twelve billion, two hundred ten million, two hundred twenty-two thousand, one hundred nine".