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20211313202020 = 2251721909164591
BaseRepresentation
bin1001001100001110100000…
…01001001101001101100100
32122120011221011112101210101
410212013100021031031210
510122120232134431040
6110552541001233444
74154135116425103
oct446072011151544
978504834471711
1020211313202020
11649262a438376
122325107a92884
13b37bc339b495
144dc338a5c03a
15250b2161509a
hex1261d024d364

20211313202020 has 48 divisors (see below), whose sum is σ = 42473749038336. Its totient is φ = 8078813856000.

The previous prime is 20211313202011. The next prime is 20211313202039. The reversal of 20211313202020 is 2020231311202.

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, 312879925 + ... + 312944515.

It is an arithmetic number, because the mean of its divisors is an integer number (884869771632).

Almost surely, 220211313202020 is an apocalyptic number.

20211313202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211313202020 is an abundant number, since it is smaller than the sum of its proper divisors (22262435836316).

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

20211313202020 is a wasteful number, since it uses less digits than its factorization.

20211313202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75412 (or 75410 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20211313202020 its reverse (2020231311202), we get a palindrome (22231544513222).

The spelling of 20211313202020 in words is "twenty trillion, two hundred eleven billion, three hundred thirteen million, two hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 1721 3442 6884 8605 9091 17210 18182 34420 36364 45455 64591 90910 129182 181820 258364 322955 645910 1291820 15645611 31291222 62582444 78228055 111161111 156456110 222322222 312912220 444644444 555805555 587196781 1111611110 1174393562 2223222220 2348787124 2935983905 5871967810 11743935620 1010565660101 2021131320202 4042262640404 5052828300505 10105656601010 20211313202020