220665166562011 has 4 divisors (see below), whose sum is σ = 221370167094472. Its totient is φ = 219960166029552.

The previous prime is 220665166562003. The next prime is 220665166562063. The reversal of 220665166562011 is 110265661566022.

220665166562011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220665166562011 - 2³ = 220665166562003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220665166562411) 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, 352500265761 + ... + 352500266386.

It is an arithmetic number, because the mean of its divisors is an integer number (55342541773618).

Almost surely, 2^{220665166562011} is an apocalyptic number.

220665166562011 is a deficient number, since it is larger than the sum of its proper divisors (705000532461).

220665166562011 is an equidigital number, since it uses as much as digits as its factorization.

220665166562011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705000532460.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 220665166562011 in words is "two hundred twenty trillion, six hundred sixty-five billion, one hundred sixty-six million, five hundred sixty-two thousand, eleven".