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22223141220 = 2235752912241
BaseRepresentation
bin10100101100100110…
…100011100101100100
32010100202202112200110
4110230212203211210
5331003111004340
614113103013020
71414465404120
oct245446434544
963322675613
1022223141220
119474424a15
12438259a170
13213214c407
14110b668580
158a1009680
hex52c9a3964

22223141220 has 48 divisors (see below), whose sum is σ = 71114053248. Its totient is φ = 5079575040.

The previous prime is 22223141179. The next prime is 22223141231. The reversal of 22223141220 is 2214132222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26455701 + ... + 26456540.

It is an arithmetic number, because the mean of its divisors is an integer number (1481542776).

Almost surely, 222223141220 is an apocalyptic number.

22223141220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22223141220 is an abundant number, since it is smaller than the sum of its proper divisors (48890912028).

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

22223141220 is a wasteful number, since it uses less digits than its factorization.

22223141220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52912260 (or 52912258 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22223141220 its reverse (2214132222), we get a palindrome (24437273442).

The spelling of 22223141220 in words is "twenty-two billion, two hundred twenty-three million, one hundred forty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 52912241 105824482 158736723 211648964 264561205 317473446 370385687 529122410 634946892 740771374 793683615 1058244820 1111157061 1481542748 1587367230 1851928435 2222314122 3174734460 3703856870 4444628244 5555785305 7407713740 11111570610 22223141220