20221417 has 4 divisors (see below), whose sum is σ = 20312320. Its totient is φ = 20130516.

The previous prime is 20221403. The next prime is 20221427. The reversal of 20221417 is 71412202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20221417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221394 and 20221403.

It is not an unprimeable number, because it can be changed into a prime (20221427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 45117 + ... + 45562.

It is an arithmetic number, because the mean of its divisors is an integer number (5078080).

Almost surely, 2^20221417 is an apocalyptic number.

It is an amenable number.

20221417 is a deficient number, since it is larger than the sum of its proper divisors (90903).

20221417 is an equidigital number, since it uses as much as digits as its factorization.

20221417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90902.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20221417 is about 4496.8229896228. The cubic root of 20221417 is about 272.4397846918.

Adding to 20221417 its reverse (71412202), we get a palindrome (91633619).

It can be divided in two parts, 202 and 21417, that multiplied together give a palindrome (4326234).

The spelling of 20221417 in words is "twenty million, two hundred twenty-one thousand, four hundred seventeen".