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12222110131 = 721159384331
BaseRepresentation
bin10110110000111111…
…01001100110110011
31011112210001112011121
423120133221212303
5200012330011011
65340442123111
7611606136100
oct133037514663
934483045147
1012222110131
115202076270
1224511b0497
1311ca19083a
1483d317aa7
154b7ee5e71
hex2d87e99b3

12222110131 has 24 divisors (see below), whose sum is σ = 15772985280. Its totient is φ = 9362278800.

The previous prime is 12222110123. The next prime is 12222110141. The reversal of 12222110131 is 13101122221.

It is not a de Polignac number, because 12222110131 - 23 = 12222110123 is a prime.

It is a super-2 number, since 2×122221101312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222110111) 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, 160365 + ... + 223966.

It is an arithmetic number, because the mean of its divisors is an integer number (657207720).

Almost surely, 212222110131 is an apocalyptic number.

12222110131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12222110131 is a deficient number, since it is larger than the sum of its proper divisors (3550875149).

12222110131 is a wasteful number, since it uses less digits than its factorization.

12222110131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384415 (or 384408 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12222110131 its reverse (13101122221), we get a palindrome (25323232352).

The spelling of 12222110131 in words is "twelve billion, two hundred twenty-two million, one hundred ten thousand, one hundred thirty-one".

Divisors: 1 7 11 49 59 77 413 539 649 2891 4543 31801 384331 2690317 4227641 18832219 22675529 29593487 158728703 207154409 249430819 1111100921 1746015733 12222110131