220105111266 has 64 divisors (see below), whose sum is σ = 491392258560. Its totient is φ = 73028656080.

The previous prime is 220105111217. The next prime is 220105111273. The reversal of 220105111266 is 662111501022.

220105111266 is a `hidden beast` number, since 2 + 20 + 1 + 0 + 511 + 126 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10989201 + ... + 11009211.

It is an arithmetic number, because the mean of its divisors is an integer number (7678004040).

Almost surely, 2^220105111266 is an apocalyptic number.

220105111266 is an abundant number, since it is smaller than the sum of its proper divisors (271287147294).

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

220105111266 is a wasteful number, since it uses less digits than its factorization.

220105111266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20956 (or 20950 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 220105111266 its reverse (662111501022), we get a palindrome (882216612288).

The spelling of 220105111266 in words is "two hundred twenty billion, one hundred five million, one hundred eleven thousand, two hundred sixty-six".