2166220800001 has 8 divisors (see below), whose sum is σ = 2216629964384. Its totient is φ = 2115813087360.

The previous prime is 2166220799957. The next prime is 2166220800047. The reversal of 2166220800001 is 1000080226612.

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

It is not a de Polignac number, because 2166220800001 - 2¹³ = 2166220791809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166220800091) 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, 3018385 + ... + 3666481.

It is an arithmetic number, because the mean of its divisors is an integer number (277078745548).

Almost surely, 2^{2166220800001} is an apocalyptic number.

It is an amenable number.

2166220800001 is a deficient number, since it is larger than the sum of its proper divisors (50409164383).

2166220800001 is an equidigital number, since it uses as much as digits as its factorization.

2166220800001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725871.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 2166220800001 in words is "two trillion, one hundred sixty-six billion, two hundred twenty million, eight hundred thousand, one".