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12001210212 = 22310325737781
BaseRepresentation
bin10110010110101001…
…11110111101100100
31010222101101122110010
423023110332331210
5144034302211322
65302511330220
7603254414025
oct131324767544
933871348403
1012001210212
1150a9408952
1223ab220970
131193499624
1481bc54c4c
154a390e20c
hex2cb53ef64

12001210212 has 48 divisors (see below), whose sum is σ = 28385465472. Its totient is φ = 3946045440.

The previous prime is 12001210189. The next prime is 12001210223. The reversal of 12001210212 is 21201210021.

It is a super-2 number, since 2×120012102122 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 298762 + ... + 336542.

It is an arithmetic number, because the mean of its divisors is an integer number (591363864).

Almost surely, 212001210212 is an apocalyptic number.

12001210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001210212 is an abundant number, since it is smaller than the sum of its proper divisors (16384255260).

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

12001210212 is a wasteful number, since it uses less digits than its factorization.

12001210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38148 (or 38146 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001210212 its reverse (21201210021), we get a palindrome (33202420233).

The spelling of 12001210212 in words is "twelve billion, one million, two hundred ten thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 103 206 257 309 412 514 618 771 1028 1236 1542 3084 26471 37781 52942 75562 79413 105884 113343 151124 158826 226686 317652 453372 3891443 7782886 9709717 11674329 15565772 19419434 23348658 29129151 38838868 46697316 58258302 116516604 1000100851 2000201702 3000302553 4000403404 6000605106 12001210212