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13101212220 = 2235550339679
BaseRepresentation
bin11000011001110010…
…01010001000111100
31020211001020112112020
430030321022020330
5203312402242340
610004004240140
7642442315665
oct141471121074
936731215466
1013101212220
115613324718
1226576a0050
13130a34b1a5
148c3d9436c
1551a2959d0
hex30ce4a23c

13101212220 has 48 divisors (see below), whose sum is σ = 36690984960. Its totient is φ = 3492933696.

The previous prime is 13101212207. The next prime is 13101212221. The reversal of 13101212220 is 2221210131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13101212220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13101212221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310341 + ... + 350019.

It is an arithmetic number, because the mean of its divisors is an integer number (764395520).

Almost surely, 213101212220 is an apocalyptic number.

13101212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13101212220 is an abundant number, since it is smaller than the sum of its proper divisors (23589772740).

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

13101212220 is a wasteful number, since it uses less digits than its factorization.

13101212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45194 (or 45192 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13101212220 its reverse (2221210131), we get a palindrome (15322422351).

The spelling of 13101212220 in words is "thirteen billion, one hundred one million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 5503 11006 16509 22012 27515 33018 39679 55030 66036 79358 82545 110060 119037 158716 165090 198395 238074 330180 396790 476148 595185 793580 1190370 2380740 218353537 436707074 655060611 873414148 1091767685 1310121222 2183535370 2620242444 3275303055 4367070740 6550606110 13101212220