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12103010412 = 22319232307973
BaseRepresentation
bin10110100010110010…
…10100100001101100
31011020110221122001220
423101121110201230
5144241332313122
65320545303340
7605631614433
oct132131244154
934213848056
1012103010412
115150919949
122419334b50
1311ab5c062c
1482b59411a
154ac81c25c
hex2d165486c

12103010412 has 48 divisors (see below), whose sum is σ = 31019170560. Its totient is φ = 3655827648.

The previous prime is 12103010407. The next prime is 12103010443. The reversal of 12103010412 is 21401030121.

It is a super-2 number, since 2×121030104122 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12103010391 and 12103010400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148743 + ... + 1159230.

It is an arithmetic number, because the mean of its divisors is an integer number (646232720).

Almost surely, 212103010412 is an apocalyptic number.

12103010412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12103010412 is an abundant number, since it is smaller than the sum of its proper divisors (18916160148).

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

12103010412 is a wasteful number, since it uses less digits than its factorization.

12103010412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308022 (or 2308020 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12103010412 its reverse (21401030121), we get a palindrome (33504040533).

The spelling of 12103010412 in words is "twelve billion, one hundred three million, ten thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 19 23 38 46 57 69 76 92 114 138 228 276 437 874 1311 1748 2622 5244 2307973 4615946 6923919 9231892 13847838 27695676 43851487 53083379 87702974 106166758 131554461 159250137 175405948 212333516 263108922 318500274 526217844 637000548 1008584201 2017168402 3025752603 4034336804 6051505206 12103010412