1066155160121 has 8 divisors (see below), whose sum is σ = 1098475064064. Its totient is φ = 1034236745920.

The previous prime is 1066155160097. The next prime is 1066155160129. The reversal of 1066155160121 is 1210615516601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066155160121 - 2²⁶ = 1066088051257 is a prime.

It is a super-2 number, since 2×1066155160121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1066155160129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100367045 + ... + 100377666.

It is an arithmetic number, because the mean of its divisors is an integer number (137309383008).

Almost surely, 2^{1066155160121} is an apocalyptic number.

It is an amenable number.

1066155160121 is a deficient number, since it is larger than the sum of its proper divisors (32319903943).

1066155160121 is a wasteful number, since it uses less digits than its factorization.

1066155160121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200744871.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 1066155160121 in words is "one trillion, sixty-six billion, one hundred fifty-five million, one hundred sixty thousand, one hundred twenty-one".