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1320103212220 = 225135987984793
BaseRepresentation
bin10011001101011100010…
…010000111010010111100
311200012102021002110000201
4103031130102013102330
5133112032410242340
62450240321133244
7164242250106502
oct23153422072274
94605367073021
101320103212220
11469941937071
12193a17a8a224
139763cc9b9a0
1447c7145a672
1524513c7c79a
hex1335c4874bc

1320103212220 has 48 divisors (see below), whose sum is σ = 2985549255360. Its totient is φ = 487408836096.

The previous prime is 1320103212199. The next prime is 1320103212221. The reversal of 1320103212220 is 222123010231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320103212221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15526144 + ... + 15610936.

It is an arithmetic number, because the mean of its divisors is an integer number (62198942820).

Almost surely, 21320103212220 is an apocalyptic number.

1320103212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320103212220 is an abundant number, since it is smaller than the sum of its proper divisors (1665446043140).

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

1320103212220 is a wasteful number, since it uses less digits than its factorization.

1320103212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144694 (or 144692 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1320103212220 its reverse (222123010231), we get a palindrome (1542226222451).

The spelling of 1320103212220 in words is "one trillion, three hundred twenty billion, one hundred three million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 59879 84793 119758 169586 239516 299395 339172 423965 598790 778427 847930 1102309 1197580 1556854 1695860 2204618 3113708 3892135 4409236 5511545 7784270 11023090 15568540 22046180 5077320047 10154640094 20309280188 25386600235 50773200470 66005160611 101546400940 132010321222 264020642444 330025803055 660051606110 1320103212220