1066121701611 has 8 divisors (see below), whose sum is σ = 1421502910464. Its totient is φ = 710744146920.

The previous prime is 1066121701609. The next prime is 1066121701639. The reversal of 1066121701611 is 1161071216601.

It is a happy number.

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

It is not a de Polignac number, because 1066121701611 - 2¹ = 1066121701609 is a prime.

It is a super-2 number, since 2×1066121701611² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066121701651) 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, 138951 + ... + 1466816.

It is an arithmetic number, because the mean of its divisors is an integer number (177687863808).

Almost surely, 2^{1066121701611} is an apocalyptic number.

1066121701611 is a deficient number, since it is larger than the sum of its proper divisors (355381208853).

1066121701611 is a wasteful number, since it uses less digits than its factorization.

1066121701611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827081.

The product of its (nonzero) digits is 3024, while the sum is 33.

The spelling of 1066121701611 in words is "one trillion, sixty-six billion, one hundred twenty-one million, seven hundred one thousand, six hundred eleven".