1201110112309 has 2 divisors, whose sum is σ = 1201110112310. Its totient is φ = 1201110112308.

The previous prime is 1201110112219. The next prime is 1201110112343. The reversal of 1201110112309 is 9032110111021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658081133284 + 543028979025 = 811222^2 + 736905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201110112309 - 2⁹ = 1201110111797 is a prime.

It is a super-2 number, since 2×1201110112309² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201110112309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201110112369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555056154 + 600555056155.

It is an arithmetic number, because the mean of its divisors is an integer number (600555056155).

Almost surely, 2^{1201110112309} is an apocalyptic number.

It is an amenable number.

1201110112309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201110112309 is an equidigital number, since it uses as much as digits as its factorization.

1201110112309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 1201110112309 in words is "one trillion, two hundred one billion, one hundred ten million, one hundred twelve thousand, three hundred nine".