1200715082181 has 6 divisors (see below), whose sum is σ = 1734366229830. Its totient is φ = 800476721448.

The previous prime is 1200715082137. The next prime is 1200715082183. The reversal of 1200715082181 is 1812805170021.

1200715082181 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 71 + 508 + 2 + 1 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1090468505025 + 110246577156 = 1044255^2 + 332034^2 .

It is not a de Polignac number, because 1200715082181 - 2⁷ = 1200715082053 is a prime.

It is a super-2 number, since 2×1200715082181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200715082183) 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, 66706393446 + ... + 66706393463.

It is an arithmetic number, because the mean of its divisors is an integer number (289061038305).

Almost surely, 2^{1200715082181} is an apocalyptic number.

It is an amenable number.

1200715082181 is a deficient number, since it is larger than the sum of its proper divisors (533651147649).

1200715082181 is a wasteful number, since it uses less digits than its factorization.

1200715082181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133412786915 (or 133412786912 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 36.

The spelling of 1200715082181 in words is "one trillion, two hundred billion, seven hundred fifteen million, eighty-two thousand, one hundred eighty-one".