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20121134300 = 22521307153949
BaseRepresentation
bin10010101111010100…
…000010010011011100
31220221021110112021022
4102233110002103130
5312202002244200
613124333423312
71311422551061
oct225724022334
956837415238
1020121134300
118595946013
123a9663ab38
131b8880ac37
14d8c418c68
157cb6e7885
hex4af5024dc

20121134300 has 36 divisors (see below), whose sum is σ = 43696552200. Its totient is φ = 8042243520.

The previous prime is 20121134221. The next prime is 20121134303. The reversal of 20121134300 is 343112102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121134303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53726 + ... + 207674.

Almost surely, 220121134300 is an apocalyptic number.

20121134300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121134300 is an abundant number, since it is smaller than the sum of its proper divisors (23575417900).

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

20121134300 is a wasteful number, since it uses less digits than its factorization.

20121134300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155270 (or 155263 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20121134300 its reverse (343112102), we get a palindrome (20464246402).

The spelling of 20121134300 in words is "twenty billion, one hundred twenty-one million, one hundred thirty-four thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1307 2614 5228 6535 13070 26140 32675 65350 130700 153949 307898 615796 769745 1539490 3078980 3848725 7697450 15394900 201211343 402422686 804845372 1006056715 2012113430 4024226860 5030283575 10060567150 20121134300