1201113312149 has 2 divisors, whose sum is σ = 1201113312150. Its totient is φ = 1201113312148.

The previous prime is 1201113312067. The next prime is 1201113312167. The reversal of 1201113312149 is 9412133111021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176845280625 + 24268031524 = 1084825^2 + 155782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201113312149 is a prime.

It is a super-2 number, since 2×1201113312149² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201113312169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600556656074 + 600556656075.

It is an arithmetic number, because the mean of its divisors is an integer number (600556656075).

Almost surely, 2^{1201113312149} is an apocalyptic number.

It is an amenable number.

1201113312149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201113312149 is an equidigital number, since it uses as much as digits as its factorization.

1201113312149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1201113312149 in words is "one trillion, two hundred one billion, one hundred thirteen million, three hundred twelve thousand, one hundred forty-nine".