1203155212113 has 6 divisors (see below), whose sum is σ = 1737890861954. Its totient is φ = 802103474736.

The previous prime is 1203155212097. The next prime is 1203155212123. The reversal of 1203155212113 is 3112125513021.

1203155212113 is a `hidden beast` number, since 1 + 20 + 3 + 1 + 5 + 521 + 2 + 113 = 666.

It can be written as a sum of positive squares in only one way, i.e., 834241103424 + 368914108689 = 913368^2 + 607383^2 .

It is not a de Polignac number, because 1203155212113 - 2⁴ = 1203155212097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203155212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66841956220 + ... + 66841956237.

Almost surely, 2^{1203155212113} is an apocalyptic number.

It is an amenable number.

1203155212113 is a deficient number, since it is larger than the sum of its proper divisors (534735649841).

1203155212113 is a wasteful number, since it uses less digits than its factorization.

1203155212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133683912463 (or 133683912460 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 1203155212113 in words is "one trillion, two hundred three billion, one hundred fifty-five million, two hundred twelve thousand, one hundred thirteen".