2166071026120 has 16 divisors (see below), whose sum is σ = 4873659808860. Its totient is φ = 866428410432.

The previous prime is 2166071026073. The next prime is 2166071026127. The reversal of 2166071026120 is 216201706612.

It can be written as a sum of positive squares in 2 ways, for example, as 1967292370404 + 198778655716 = 1402602^2 + 445846^2 .

It is not an unprimeable number, because it can be changed into a prime (2166071026127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27075887787 + ... + 27075887866.

Almost surely, 2^{2166071026120} is an apocalyptic number.

2166071026120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2166071026120 is an abundant number, since it is smaller than the sum of its proper divisors (2707588782740).

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

2166071026120 is a wasteful number, since it uses less digits than its factorization.

2166071026120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54151775664 (or 54151775660 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 2166071026120 in words is "two trillion, one hundred sixty-six billion, seventy-one million, twenty-six thousand, one hundred twenty".