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20211301210120 = 235684477382099
BaseRepresentation
bin1001001100001110011110…
…11011011101100000001000
32122120011220022222010222221
410212013033123131200020
510122120221102210440
6110552535452223424
74154134612461226
oct446071733354010
978504808863887
1020211301210120
116492623697709
122325103a6ab74
13b37bc0a60097
144dc337219b16
15250b20546d4a
hex1261cf6dd808

20211301210120 has 32 divisors (see below), whose sum is σ = 45476098272000. Its totient is φ = 8084401275328.

The previous prime is 20211301210099. The next prime is 20211301210147. The reversal of 20211301210120 is 2101210311202.

It is a junction number, because it is equal to n+sod(n) for n = 20211301210094 and 20211301210103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953170 + ... + 6428929.

It is an arithmetic number, because the mean of its divisors is an integer number (1421128071000).

Almost surely, 220211301210120 is an apocalyptic number.

20211301210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211301210120 is an abundant number, since it is smaller than the sum of its proper divisors (25264797061880).

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

20211301210120 is a wasteful number, since it uses less digits than its factorization.

20211301210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7450557 (or 7450553 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20211301210120 its reverse (2101210311202), we get a palindrome (22312511521322).

The spelling of 20211301210120 in words is "twenty trillion, two hundred eleven billion, three hundred one million, two hundred ten thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 68447 136894 273788 342235 547576 684470 1368940 2737880 7382099 14764198 29528396 36910495 59056792 73820990 147641980 295283960 505282530253 1010565060506 2021130121012 2526412651265 4042260242024 5052825302530 10105650605060 20211301210120