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21113002312 = 2319612277071
BaseRepresentation
bin10011101010011011…
…101101100101001000
32000111101211122101121
4103222123231211020
5321214412033222
613411004525024
71345125362413
oct235233554510
960441748347
1021113002312
118a54815146
124112850774
131cb615b89c
14104404ab7a
1583881e5c7
hex4ea6ed948

21113002312 has 32 divisors (see below), whose sum is σ = 42353539200. Its totient is φ = 9836942400.

The previous prime is 21113002307. The next prime is 21113002349. The reversal of 21113002312 is 21320031112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129264 + ... + 1147807.

It is an arithmetic number, because the mean of its divisors is an integer number (1323548100).

Almost surely, 221113002312 is an apocalyptic number.

It is an amenable number.

21113002312 is an abundant number, since it is smaller than the sum of its proper divisors (21240536888).

21113002312 is a wasteful number, since it uses less digits than its factorization.

21113002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277157 (or 2277153 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21113002312 its reverse (21320031112), we get a palindrome (42433033424).

The spelling of 21113002312 in words is "twenty-one billion, one hundred thirteen million, two thousand, three hundred twelve".

Divisors: 1 2 4 8 19 38 61 76 122 152 244 488 1159 2318 4636 9272 2277071 4554142 9108284 18216568 43264349 86528698 138901331 173057396 277802662 346114792 555605324 1111210648 2639125289 5278250578 10556501156 21113002312