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20120210120 = 2351871268843
BaseRepresentation
bin10010101111010000…
…100000101011001000
31220221012201120112102
4102233100200223020
5312201233210440
613124301532532
71311411651503
oct225720405310
956835646472
1020120210120
11859537472a
123a96274148
131b8857639a
14d8c25813a
157cb5b3b15
hex4af420ac8

20120210120 has 32 divisors (see below), whose sum is σ = 45294837120. Its totient is φ = 8043752640.

The previous prime is 20120210069. The next prime is 20120210137. The reversal of 20120210120 is 2101202102.

It is a happy number.

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, 59582 + ... + 209261.

It is an arithmetic number, because the mean of its divisors is an integer number (1415463660).

Almost surely, 220120210120 is an apocalyptic number.

20120210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120210120 is an abundant number, since it is smaller than the sum of its proper divisors (25174627000).

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

20120210120 is a wasteful number, since it uses less digits than its factorization.

20120210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270725 (or 270721 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20120210120 its reverse (2101202102), we get a palindrome (22221412222).

The spelling of 20120210120 in words is "twenty billion, one hundred twenty million, two hundred ten thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1871 3742 7484 9355 14968 18710 37420 74840 268843 537686 1075372 1344215 2150744 2688430 5376860 10753720 503005253 1006010506 2012021012 2515026265 4024042024 5030052530 10060105060 20120210120