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12220200987 = 3191311636561
BaseRepresentation
bin10110110000110000…
…10111100000011011
31011112122110112022120
423120120113200123
5200011332412422
65340333152323
7611553665061
oct133030274033
934478415276
1012220200987
115200a91965
12245062b6a3
1311c9972877
1483cd7c031
154b7c6a45c
hex2d861781b

12220200987 has 16 divisors (see below), whose sum is σ = 17282094720. Its totient is φ = 7659100800.

The previous prime is 12220200977. The next prime is 12220201013. The reversal of 12220200987 is 78900202221.

It is not a de Polignac number, because 12220200987 - 219 = 12219676699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12220200907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810814 + ... + 825747.

It is an arithmetic number, because the mean of its divisors is an integer number (1080130920).

Almost surely, 212220200987 is an apocalyptic number.

12220200987 is a deficient number, since it is larger than the sum of its proper divisors (5061893733).

12220200987 is a wasteful number, since it uses less digits than its factorization.

12220200987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636714.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 12220200987 in words is "twelve billion, two hundred twenty million, two hundred thousand, nine hundred eighty-seven".

Divisors: 1 3 19 57 131 393 2489 7467 1636561 4909683 31094659 93283977 214389491 643168473 4073400329 12220200987