2166016215011 has 4 divisors (see below), whose sum is σ = 2362926780024. Its totient is φ = 1969105650000.

The previous prime is 2166016214969. The next prime is 2166016215043. The reversal of 2166016215011 is 1105126106612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2166016215011 - 2¹⁰ = 2166016213987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166016211011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98455282490 + ... + 98455282511.

It is an arithmetic number, because the mean of its divisors is an integer number (590731695006).

Almost surely, 2^{2166016215011} is an apocalyptic number.

2166016215011 is a deficient number, since it is larger than the sum of its proper divisors (196910565013).

2166016215011 is a wasteful number, since it uses less digits than its factorization.

2166016215011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196910565012.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 2166016215011 in words is "two trillion, one hundred sixty-six billion, sixteen million, two hundred fifteen thousand, eleven".