11520666542212 has 6 divisors (see below), whose sum is σ = 20161166448878. Its totient is φ = 5760333271104.

The previous prime is 11520666542201. The next prime is 11520666542219. The reversal of 11520666542212 is 21224566602511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11480061874176 + 40604668036 = 3388224^2 + 201506^2 .

It is not an unprimeable number, because it can be changed into a prime (11520666542219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440083317773 + ... + 1440083317780.

Almost surely, 2^{11520666542212} is an apocalyptic number.

It is an amenable number.

11520666542212 is a deficient number, since it is larger than the sum of its proper divisors (8640499906666).

11520666542212 is a wasteful number, since it uses less digits than its factorization.

11520666542212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880166635557 (or 2880166635555 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 11520666542212 in words is "eleven trillion, five hundred twenty billion, six hundred sixty-six million, five hundred forty-two thousand, two hundred twelve".