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22102200020 = 2254792307119
BaseRepresentation
bin10100100101011001…
…001100111011010100
32010001100012002112202
4110211121030323110
5330231130400040
614053102504032
71411466412635
oct244531147324
963040162482
1022102200020
11941213000a
124349b95018
132113085c84
1410d958588c
158955ba015
hex52564ced4

22102200020 has 24 divisors (see below), whose sum is σ = 46511539200. Its totient is φ = 8822419232.

The previous prime is 22102200011. The next prime is 22102200023. The reversal of 22102200020 is 2000220122.

It is a junction number, because it is equal to n+sod(n) for n = 22102199974 and 22102200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102200023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143980 + ... + 1163139.

It is an arithmetic number, because the mean of its divisors is an integer number (1937980800).

Almost surely, 222102200020 is an apocalyptic number.

22102200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22102200020 is an abundant number, since it is smaller than the sum of its proper divisors (24409339180).

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

22102200020 is a wasteful number, since it uses less digits than its factorization.

22102200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307607 (or 2307605 counting only the distinct ones).

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

Adding to 22102200020 its reverse (2000220122), we get a palindrome (24102420142).

The spelling of 22102200020 in words is "twenty-two billion, one hundred two million, two hundred thousand, twenty".

Divisors: 1 2 4 5 10 20 479 958 1916 2395 4790 9580 2307119 4614238 9228476 11535595 23071190 46142380 1105110001 2210220002 4420440004 5525550005 11051100010 22102200020