20122266 has 8 divisors (see below), whose sum is σ = 40244544. Its totient is φ = 6707420.

The previous prime is 20122241. The next prime is 20122343. The reversal of 20122266 is 66222102.

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

20122266 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676850 + ... + 1676861.

It is an arithmetic number, because the mean of its divisors is an integer number (5030568).

Almost surely, 2^20122266 is an apocalyptic number.

20122266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20122266 is a wasteful number, since it uses less digits than its factorization.

20122266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353716.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20122266 is about 4485.7848811551. The cubic root of 20122266 is about 271.9937732859.

Adding to 20122266 its reverse (66222102), we get a palindrome (86344368).

It can be divided in two parts, 2012 and 2266, that added together give a triangular number (4278 = T₉₂).

The spelling of 20122266 in words is "twenty million, one hundred twenty-two thousand, two hundred sixty-six".