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13211130020 = 22511191314401
BaseRepresentation
bin11000100110111000…
…11101100010100100
31021002201001221101212
430103130131202210
5204024022130040
610022532210552
7645245516024
oct142334354244
937081057355
1013211130020
11566a37a580
122688469a58
131327054cca
148d4807a84
15524c58d65
hex31371d8a4

13211130020 has 48 divisors (see below), whose sum is σ = 30424052736. Its totient is φ = 4778880000.

The previous prime is 13211130019. The next prime is 13211130059. The reversal of 13211130020 is 2003111231.

It is a junction number, because it is equal to n+sod(n) for n = 13211129977 and 13211130004.

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, 115181 + ... + 199220.

It is an arithmetic number, because the mean of its divisors is an integer number (633834432).

Almost surely, 213211130020 is an apocalyptic number.

13211130020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13211130020 is an abundant number, since it is smaller than the sum of its proper divisors (17212922716).

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

13211130020 is a wasteful number, since it uses less digits than its factorization.

13211130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314612 (or 314610 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13211130020 its reverse (2003111231), we get a palindrome (15214241251).

The spelling of 13211130020 in words is "thirteen billion, two hundred eleven million, one hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 191 220 382 764 955 1910 2101 3820 4202 8404 10505 21010 42020 314401 628802 1257604 1572005 3144010 3458411 6288020 6916822 13833644 17292055 34584110 60050591 69168220 120101182 240202364 300252955 600505910 660556501 1201011820 1321113002 2642226004 3302782505 6605565010 13211130020