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2212012220 = 2251110054601
BaseRepresentation
bin1000001111011000…
…1010000010111100
312201011021212022112
42003312022002330
514012233342340
61003255033152
7105546536135
oct20366120274
95634255275
102212012220
11a35694580
1251896b7b8
13293379092
1416dac6c8c
15ce2e1065
hex83d8a0bc

2212012220 has 24 divisors (see below), whose sum is σ = 5067519408. Its totient is φ = 804368000.

The previous prime is 2212012199. The next prime is 2212012237. The reversal of 2212012220 is 222102122.

It is a super-2 number, since 2×22120122202 = 9785996122858656800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2212012195 and 2212012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5027081 + ... + 5027520.

It is an arithmetic number, because the mean of its divisors is an integer number (211146642).

Almost surely, 22212012220 is an apocalyptic number.

2212012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212012220 is an abundant number, since it is smaller than the sum of its proper divisors (2855507188).

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

2212012220 is a wasteful number, since it uses less digits than its factorization.

2212012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10054621 (or 10054619 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2212012220 is about 47032.0339768545. The cubic root of 2212012220 is about 1302.9542714220.

Adding to 2212012220 its reverse (222102122), we get a palindrome (2434114342).

The spelling of 2212012220 in words is "two billion, two hundred twelve million, twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 10054601 20109202 40218404 50273005 100546010 110600611 201092020 221201222 442402444 553003055 1106006110 2212012220