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12203221300 = 2252313936523
BaseRepresentation
bin10110101110101111…
…00110000100110100
31011111110111212120021
423113113212010310
5144443011040200
65334525214524
7611256445444
oct132727460464
934443455507
1012203221300
1151a2444866
122446a01444
1311c62a910a
1483a9dc124
154b651441a
hex2d75e6134

12203221300 has 36 divisors (see below), whose sum is σ = 27335222656. Its totient is φ = 4723826400.

The previous prime is 12203221271. The next prime is 12203221307. The reversal of 12203221300 is 312230221.

It is a super-2 number, since 2×122032213002 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203221307) 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, 1965162 + ... + 1971361.

Almost surely, 212203221300 is an apocalyptic number.

12203221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12203221300 is an abundant number, since it is smaller than the sum of its proper divisors (15132001356).

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

12203221300 is a wasteful number, since it uses less digits than its factorization.

12203221300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936568 (or 3936561 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12203221300 its reverse (312230221), we get a palindrome (12515451521).

The spelling of 12203221300 in words is "twelve billion, two hundred three million, two hundred twenty-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 31 50 62 100 124 155 310 620 775 1550 3100 3936523 7873046 15746092 19682615 39365230 78730460 98413075 122032213 196826150 244064426 393652300 488128852 610161065 1220322130 2440644260 3050805325 6101610650 12203221300