20022169 has 4 divisors (see below), whose sum is σ = 20036196. Its totient is φ = 20008144.

The previous prime is 20022137. The next prime is 20022179. The reversal of 20022169 is 96122002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96122002 = 2 ⋅48061001.

It can be written as a sum of positive squares in 2 ways, for example, as 9211225 + 10810944 = 3035^2 + 3288^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022169 - 2⁵ = 20022137 is a prime.

It is a super-2 number, since 2×20022169² = 801774502929122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20022109) by changing a digit.

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, 4594 + ... + 7819.

It is an arithmetic number, because the mean of its divisors is an integer number (5009049).

Almost surely, 2^20022169 is an apocalyptic number.

It is an amenable number.

20022169 is a deficient number, since it is larger than the sum of its proper divisors (14027).

20022169 is a wasteful number, since it uses less digits than its factorization.

20022169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14026.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20022169 is about 4474.6138380870. The cubic root of 20022169 is about 271.5420178325.

It can be divided in two parts, 2002216 and 9, that added together give a square (2002225 = 1415²).

The spelling of 20022169 in words is "twenty million, twenty-two thousand, one hundred sixty-nine".