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11212020195 = 3567891031217
BaseRepresentation
bin10100111000100100…
…11101100111100011
31001221101101122021020
422130102131213203
5140430234121240
65052320300523
7544562412345
oct123422354743
931841348236
1011212020195
1148339907a2
12220aa71743
131098b2cb9c
14785101295
154594c00d0
hex29c49d9e3

11212020195 has 64 divisors (see below), whose sum is σ = 18605583360. Its totient is φ = 5763022848.

The previous prime is 11212020191. The next prime is 11212020229. The reversal of 11212020195 is 59102021211.

It is not a de Polignac number, because 11212020195 - 22 = 11212020191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212020191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9212227 + ... + 9213443.

It is an arithmetic number, because the mean of its divisors is an integer number (290712240).

Almost surely, 211212020195 is an apocalyptic number.

11212020195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11212020195 is a deficient number, since it is larger than the sum of its proper divisors (7393563165).

11212020195 is a wasteful number, since it uses less digits than its factorization.

11212020195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 360, while the sum is 24.

The spelling of 11212020195 in words is "eleven billion, two hundred twelve million, twenty thousand, one hundred ninety-five".

Divisors: 1 3 5 15 67 89 103 201 267 309 335 445 515 1005 1217 1335 1545 3651 5963 6085 6901 9167 17889 18255 20703 27501 29815 34505 45835 81539 89445 103515 108313 125351 137505 244617 324939 376053 407695 541565 614189 626755 1223085 1624695 1842567 1880265 3070945 7256971 8398517 9212835 11156239 21770913 25195551 33468717 36284855 41992585 55781195 108854565 125977755 167343585 747468013 2242404039 3737340065 11212020195