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20120210011 = 1122317534679
BaseRepresentation
bin10010101111010000…
…100000101001011011
31220221012201120101101
4102233100200221123
5312201233210021
613124301532231
71311411651256
oct225720405133
956835646341
1020120210011
118595374640
123a96274077
131b88576315
14d8c25809d
157cb5b3a91
hex4af420a5b

20120210011 has 16 divisors (see below), whose sum is σ = 22065039360. Its totient is φ = 18194800320.

The previous prime is 20120210009. The next prime is 20120210029. The reversal of 20120210011 is 11001202102.

It is a cyclic number.

It is not a de Polignac number, because 20120210011 - 21 = 20120210009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120210011.

It is not an unprimeable number, because it can be changed into a prime (20120610011) 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, 4297770 + ... + 4302448.

It is an arithmetic number, because the mean of its divisors is an integer number (1379064960).

Almost surely, 220120210011 is an apocalyptic number.

20120210011 is a deficient number, since it is larger than the sum of its proper divisors (1944829349).

20120210011 is a wasteful number, since it uses less digits than its factorization.

20120210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20120210011 its reverse (11001202102), we get a palindrome (31121412113).

The spelling of 20120210011 in words is "twenty billion, one hundred twenty million, two hundred ten thousand, eleven".

Divisors: 1 11 223 1753 2453 4679 19283 51469 390919 1043417 4300109 8202287 11477587 90225157 1829110001 20120210011