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12203013020 = 2251155468241
BaseRepresentation
bin10110101110101101…
…10011001110011100
31011111110010021212012
423113112303032130
5144442432404040
65334520530352
7611254620302
oct132726631634
934443107765
1012203013020
1151a2312330
1224469209b8
1311c6235383
1483a986272
154b64c2865
hex2d75b339c

12203013020 has 24 divisors (see below), whose sum is σ = 27955993968. Its totient is φ = 4437459200.

The previous prime is 12203012909. The next prime is 12203013023. The reversal of 12203013020 is 2031030221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12203012986 and 12203013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203013023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27733901 + ... + 27734340.

It is an arithmetic number, because the mean of its divisors is an integer number (1164833082).

Almost surely, 212203013020 is an apocalyptic number.

12203013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12203013020 is an abundant number, since it is smaller than the sum of its proper divisors (15752980948).

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

12203013020 is a wasteful number, since it uses less digits than its factorization.

12203013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55468261 (or 55468259 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12203013020 its reverse (2031030221), we get a palindrome (14234043241).

The spelling of 12203013020 in words is "twelve billion, two hundred three million, thirteen thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 55468241 110936482 221872964 277341205 554682410 610150651 1109364820 1220301302 2440602604 3050753255 6101506510 12203013020