2101305666206 has 32 divisors (see below), whose sum is σ = 3295054728000. Its totient is φ = 1003123179520.

The previous prime is 2101305666199. The next prime is 2101305666211. The reversal of 2101305666206 is 6026665031012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101305666206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137072750 + ... + 137088078.

It is an arithmetic number, because the mean of its divisors is an integer number (102970460250).

Almost surely, 2^{2101305666206} is an apocalyptic number.

2101305666206 is a deficient number, since it is larger than the sum of its proper divisors (1193749061794).

2101305666206 is a wasteful number, since it uses less digits than its factorization.

2101305666206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20644.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 2101305666206 in words is "two trillion, one hundred one billion, three hundred five million, six hundred sixty-six thousand, two hundred six".