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20130102122 = 213977981801
BaseRepresentation
bin10010101111110110…
…001111101101101010
31220221220100010210212
4102233312033231222
5312211301231442
613125253541122
71311562021244
oct225766175552
956856303725
1020130102122
11859aa10739
123a996447a2
131b8a62aa40
14d8d6b1094
157cc3b9a82
hex4afd8fb6a

20130102122 has 16 divisors (see below), whose sum is σ = 32853097032. Its totient is φ = 9195033600.

The previous prime is 20130102119. The next prime is 20130102143. The reversal of 20130102122 is 22120103102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16964802001 + 3165300121 = 130249^2 + 56261^2 .

It is a super-2 number, since 2×201301021222 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20130102097 and 20130102106.

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, 3988379 + ... + 3993422.

Almost surely, 220130102122 is an apocalyptic number.

20130102122 is a deficient number, since it is larger than the sum of its proper divisors (12722994910).

20130102122 is a wasteful number, since it uses less digits than its factorization.

20130102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7981913.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20130102122 its reverse (22120103102), we get a palindrome (42250205224).

The spelling of 20130102122 in words is "twenty billion, one hundred thirty million, one hundred two thousand, one hundred twenty-two".

Divisors: 1 2 13 26 97 194 1261 2522 7981801 15963602 103763413 207526826 774234697 1548469394 10065051061 20130102122