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20122110020 = 2251319762779
BaseRepresentation
bin10010101111010111…
…110000100001000100
31220221100022002201002
4102233113300201010
5312202230010040
613124410352432
71311434053535
oct225727604104
956840262632
1020122110020
1185964520a1
123a96a2b718
131b88a9009c
14d8c5d068c
157cb83ba15
hex4af5f0844

20122110020 has 24 divisors (see below), whose sum is σ = 42288523200. Its totient is φ = 8042731232.

The previous prime is 20122109989. The next prime is 20122110049. The reversal of 20122110020 is 2001122102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20122109983 and 20122110010.

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, 355010 + ... + 407769.

It is an arithmetic number, because the mean of its divisors is an integer number (1762021800).

Almost surely, 220122110020 is an apocalyptic number.

20122110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122110020 is an abundant number, since it is smaller than the sum of its proper divisors (22166413180).

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

20122110020 is a wasteful number, since it uses less digits than its factorization.

20122110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764107 (or 764105 counting only the distinct ones).

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

Adding to 20122110020 its reverse (2001122102), we get a palindrome (22123232122).

The spelling of 20122110020 in words is "twenty billion, one hundred twenty-two million, one hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 20 1319 2638 5276 6595 13190 26380 762779 1525558 3051116 3813895 7627790 15255580 1006105501 2012211002 4024422004 5030527505 10061055010 20122110020