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20201222 = 223439157
BaseRepresentation
bin100110100001…
…1111100000110
31102000022212102
41031003330012
520132414342
62000552102
7333464456
oct115037406
942008772
1020201222
1110448528
126922632
134253bb2
14297bd66
151b90832
hex1343f06

20201222 has 8 divisors (see below), whose sum is σ = 31619376. Its totient is φ = 9661432.

The previous prime is 20201191. The next prime is 20201227. The reversal of 20201222 is 22210202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219533 + ... + 219624.

It is an arithmetic number, because the mean of its divisors is an integer number (3952422).

Almost surely, 220201222 is an apocalyptic number.

20201222 is a deficient number, since it is larger than the sum of its proper divisors (11418154).

20201222 is a wasteful number, since it uses less digits than its factorization.

20201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439182.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20201222 is about 4494.5769545086. The cubic root of 20201222 is about 272.3490598587.

Adding to 20201222 its reverse (22210202), we get a palindrome (42411424).

The spelling of 20201222 in words is "twenty million, two hundred one thousand, two hundred twenty-two".

Divisors: 1 2 23 46 439157 878314 10100611 20201222