Search a number
-
+
1222211011210 = 257831432714683
BaseRepresentation
bin10001110010010001011…
…101000000001010001010
311022211201222122101102021
4101302101131000022022
5130011042004324320
62333250451355054
7154205346116530
oct21622135001212
94284658571367
101222211011210
11431378286602
12178a57bb2a8a
138b33c07aba7
1443226316150
1521bd4aeadaa
hex11c9174028a

1222211011210 has 64 divisors (see below), whose sum is σ = 2544905889792. Its totient is φ = 413937965376.

The previous prime is 1222211011193. The next prime is 1222211011211. The reversal of 1222211011210 is 121101122221.

It is not an unprimeable number, because it can be changed into a prime (1222211011211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83232529 + ... + 83247211.

It is an arithmetic number, because the mean of its divisors is an integer number (39764154528).

Almost surely, 21222211011210 is an apocalyptic number.

1222211011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222211011210 is an abundant number, since it is smaller than the sum of its proper divisors (1322694878582).

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

1222211011210 is a wasteful number, since it uses less digits than its factorization.

1222211011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29107.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222211011210 its reverse (121101122221), we get a palindrome (1343312133431).

It can be divided in two parts, 12 and 22211011210, that added together give a palindrome (22211011222).

The spelling of 1222211011210 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, eleven thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 35 70 83 166 415 581 830 1162 2905 5810 14327 14683 28654 29366 71635 73415 100289 102781 143270 146830 200578 205562 501445 513905 1002890 1027810 1189141 1218689 2378282 2437378 5945705 6093445 8323987 8530823 11891410 12186890 16647974 17061646 41619935 42654115 83239870 85308230 210363341 420726682 1051816705 1472543387 2103633410 2945086774 7362716935 14725433870 17460157303 34920314606 87300786515 122221101121 174601573030 244442202242 611105505605 1222211011210