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122660210420 = 225111854130071
BaseRepresentation
bin111001000111100011…
…1100100011011110100
3102201121101211022011022
41302033013210123310
54002202003213140
6132203242000312
711601430404626
oct1621707443364
9381541738138
10122660210420
1148024544630
121b9327a6098
13b74a37bc87
145d1877cc16
1532cd7cb0b5
hex1c8f1e46f4

122660210420 has 48 divisors (see below), whose sum is σ = 281027892096. Its totient is φ = 44599824000.

The previous prime is 122660210401. The next prime is 122660210549. The reversal of 122660210420 is 24012066221.

It is a self number, because there is not a number n which added to its sum of digits gives 122660210420.

It is a congruent number.

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, 4063985 + ... + 4094055.

It is an arithmetic number, because the mean of its divisors is an integer number (5854747752).

Almost surely, 2122660210420 is an apocalyptic number.

122660210420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122660210420 is an abundant number, since it is smaller than the sum of its proper divisors (158367681676).

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

122660210420 is a wasteful number, since it uses less digits than its factorization.

122660210420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48632 (or 48630 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 122660210420 its reverse (24012066221), we get a palindrome (146672276641).

The spelling of 122660210420 in words is "one hundred twenty-two billion, six hundred sixty million, two hundred ten thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 18541 30071 37082 60142 74164 92705 120284 150355 185410 203951 300710 330781 370820 407902 601420 661562 815804 1019755 1323124 1653905 2039510 3307810 4079020 6615620 557546411 1115092822 2230185644 2787732055 5575464110 6133010521 11150928220 12266021042 24532042084 30665052605 61330105210 122660210420