Search a number
-
+
2132101220 = 2251793891531
BaseRepresentation
bin111111100010101…
…0100100001100100
312111120220222000212
41333011110201210
513331304214340
6551322154552
7103556363354
oct17705244144
95446828025
102132101220
119a4574227
124b6052a58
1327c94a372
14163244b64
15c72a8a65
hex7f154864

2132101220 has 48 divisors (see below), whose sum is σ = 4516948800. Its totient is φ = 845343360.

The previous prime is 2132101211. The next prime is 2132101259. The reversal of 2132101220 is 221012312.

It is a happy number.

It is a super-2 number, since 2×21321012202 = 9091711224650976800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2132101195 and 2132101204.

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, 1391855 + ... + 1393385.

It is an arithmetic number, because the mean of its divisors is an integer number (94103100).

Almost surely, 22132101220 is an apocalyptic number.

2132101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2132101220 is an abundant number, since it is smaller than the sum of its proper divisors (2384847580).

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

2132101220 is a wasteful number, since it uses less digits than its factorization.

2132101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2132101220 is about 46174.6815906726. The cubic root of 2132101220 is about 1287.0713000085.

Adding to 2132101220 its reverse (221012312), we get a palindrome (2353113532).

The spelling of 2132101220 in words is "two billion, one hundred thirty-two million, one hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 179 358 389 716 778 895 1531 1556 1790 1945 3062 3580 3890 6124 7655 7780 15310 30620 69631 139262 274049 278524 348155 548098 595559 696310 1096196 1191118 1370245 1392620 2382236 2740490 2977795 5480980 5955590 11911180 106605061 213210122 426420244 533025305 1066050610 2132101220