Search a number
-
+
12102312100 = 2252711704551
BaseRepresentation
bin10110100010101101…
…01010000010100100
31011020102122011011111
423101112222002210
5144241142441400
65320522314404
7605622645514
oct132126520244
934212564144
1012102312100
11515049222a
122419058a04
1311ab407828
1482b451844
154ac7303ba
hex2d15aa0a4

12102312100 has 36 divisors (see below), whose sum is σ = 26631920448. Its totient is φ = 4772740000.

The previous prime is 12102312077. The next prime is 12102312139. The reversal of 12102312100 is 121320121.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 845176 + ... + 859375.

It is an arithmetic number, because the mean of its divisors is an integer number (739775568).

Almost surely, 212102312100 is an apocalyptic number.

12102312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102312100 is an abundant number, since it is smaller than the sum of its proper divisors (14529608348).

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

12102312100 is a wasteful number, since it uses less digits than its factorization.

12102312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704636 (or 1704629 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12102312100 its reverse (121320121), we get a palindrome (12223632221).

The spelling of 12102312100 in words is "twelve billion, one hundred two million, three hundred twelve thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 71 100 142 284 355 710 1420 1775 3550 7100 1704551 3409102 6818204 8522755 17045510 34091020 42613775 85227550 121023121 170455100 242046242 484092484 605115605 1210231210 2420462420 3025578025 6051156050 12102312100