20122105 has 8 divisors (see below), whose sum is σ = 24437952. Its totient is φ = 15903408.

The previous prime is 20122093. The next prime is 20122133. The reversal of 20122105 is 50122102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122105 - 2¹⁵ = 20089337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23829 + ... + 24658.

It is an arithmetic number, because the mean of its divisors is an integer number (3054744).

Almost surely, 2^20122105 is an apocalyptic number.

It is an amenable number.

20122105 is a deficient number, since it is larger than the sum of its proper divisors (4315847).

20122105 is an equidigital number, since it uses as much as digits as its factorization.

20122105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48575.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 20122105 is about 4485.7669355418. The cubic root of 20122105 is about 271.9930478687.

Adding to 20122105 its reverse (50122102), we get a palindrome (70244207).

The spelling of 20122105 in words is "twenty million, one hundred twenty-two thousand, one hundred five".