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11011100220 = 22325411492019
BaseRepresentation
bin10100100000101000…
…00000111000111100
31001102101022211212200
422100110000320330
5140022320201340
65020342031500
7536602544001
oct122024007074
931371284780
1011011100220
11474052a62a
122173718590
131066312c23
1476655d8a8
15446a33330
hex290500e3c

11011100220 has 72 divisors (see below), whose sum is σ = 34215002640. Its totient is φ = 2864674560.

The previous prime is 11011100207. The next prime is 11011100227. The reversal of 11011100220 is 2200111011.

Adding to 11011100220 its reverse (2200111011), we get a palindrome (13211211231).

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011100227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 738630 + ... + 753389.

It is an arithmetic number, because the mean of its divisors is an integer number (475208370).

Almost surely, 211011100220 is an apocalyptic number.

11011100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011100220 is an abundant number, since it is smaller than the sum of its proper divisors (23203902420).

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

11011100220 is a wasteful number, since it uses less digits than its factorization.

11011100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492075 (or 1492070 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The spelling of 11011100220 in words is "eleven billion, eleven million, one hundred thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 41 45 60 82 90 123 164 180 205 246 369 410 492 615 738 820 1230 1476 1845 2460 3690 7380 1492019 2984038 4476057 5968076 7460095 8952114 13428171 14920190 17904228 22380285 26856342 29840380 44760570 53712684 61172779 67140855 89521140 122345558 134281710 183518337 244691116 268563420 305863895 367036674 550555011 611727790 734073348 917591685 1101110022 1223455580 1835183370 2202220044 2752775055 3670366740 5505550110 11011100220