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20020210101020 = 2251001010505051
BaseRepresentation
bin1001000110101010100011…
…00000101110101100011100
32121212220122212100000022202
410203111101200232230130
510111002342241213040
6110325054010431032
74134261320033123
oct443252140565434
977786585300282
1020020210101020
116419583749068
1222b4073a32478
13b22b893714ac
144d2daa3d4aba
1524ab892a4015
hex12355182eb1c

20020210101020 has 12 divisors (see below), whose sum is σ = 42042441212184. Its totient is φ = 8008084040400.

The previous prime is 20020210101011. The next prime is 20020210101113. The reversal of 20020210101020 is 2010101202002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20020210100992 and 20020210101010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500505252506 + ... + 500505252545.

It is an arithmetic number, because the mean of its divisors is an integer number (3503536767682).

Almost surely, 220020210101020 is an apocalyptic number.

20020210101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020210101020 is an abundant number, since it is smaller than the sum of its proper divisors (22022231111164).

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

20020210101020 is a wasteful number, since it uses less digits than its factorization.

20020210101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001010505060 (or 1001010505058 counting only the distinct ones).

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

Adding to 20020210101020 its reverse (2010101202002), we get a palindrome (22030311303022).

The spelling of 20020210101020 in words is "twenty trillion, twenty billion, two hundred ten million, one hundred one thousand, twenty".

Divisors: 1 2 4 5 10 20 1001010505051 2002021010102 4004042020204 5005052525255 10010105050510 20020210101020