1012112202209 has 2 divisors, whose sum is σ = 1012112202210. Its totient is φ = 1012112202208.

The previous prime is 1012112202197. The next prime is 1012112202259. The reversal of 1012112202209 is 9022022112101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 720461440000 + 291650762209 = 848800^2 + 540047^2 .

It is an emirp because it is prime and its reverse (9022022112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012112202209 - 2²⁴ = 1012095424993 is a prime.

It is a super-2 number, since 2×1012112202209² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012112202259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506056101104 + 506056101105.

It is an arithmetic number, because the mean of its divisors is an integer number (506056101105).

Almost surely, 2^{1012112202209} is an apocalyptic number.

It is an amenable number.

1012112202209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012112202209 is an equidigital number, since it uses as much as digits as its factorization.

1012112202209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1012112202209 in words is "one trillion, twelve billion, one hundred twelve million, two hundred two thousand, two hundred nine".