1666231066122 has 64 divisors (see below), whose sum is σ = 3834260926464. Its totient is φ = 472850265600.

The previous prime is 1666231066121. The next prime is 1666231066153. The reversal of 1666231066122 is 2216601326661.

It is a super-2 number, since 2×1666231066122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1666231066121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69134778 + ... + 69158874.

It is an arithmetic number, because the mean of its divisors is an integer number (59910326976).

Almost surely, 2^{1666231066122} is an apocalyptic number.

1666231066122 is an abundant number, since it is smaller than the sum of its proper divisors (2168029860342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666231066122 is a wasteful number, since it uses less digits than its factorization.

1666231066122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35163.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 1666231066122 in words is "one trillion, six hundred sixty-six billion, two hundred thirty-one million, sixty-six thousand, one hundred twenty-two".