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12001010202 = 2322922990441
BaseRepresentation
bin10110010110101000…
…01110001000011010
31010222101000111002100
423023110032020122
5144034224311302
65302503144230
7603252621636
oct131324161032
933871014070
1012001010202
1150a9291655
1223ab145076
13119342958c
1481bc01dc6
154a38bed1c
hex2cb50e21a

12001010202 has 24 divisors (see below), whose sum is σ = 26898817140. Its totient is φ = 3862393920.

The previous prime is 12001010171. The next prime is 12001010207. The reversal of 12001010202 is 20201010021.

It can be written as a sum of positive squares in 2 ways, for example, as 11889939681 + 111070521 = 109041^2 + 10539^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12001010207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11494699 + ... + 11495742.

Almost surely, 212001010202 is an apocalyptic number.

12001010202 is an abundant number, since it is smaller than the sum of its proper divisors (14897806938).

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

12001010202 is a wasteful number, since it uses less digits than its factorization.

12001010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22990478 (or 22990475 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12001010202 its reverse (20201010021), we get a palindrome (32202020223).

The spelling of 12001010202 in words is "twelve billion, one million, ten thousand, two hundred two".

Divisors: 1 2 3 6 9 18 29 58 87 174 261 522 22990441 45980882 68971323 137942646 206913969 413827938 666722789 1333445578 2000168367 4000336734 6000505101 12001010202