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12200202020 = 2255449111949
BaseRepresentation
bin10110101110011000…
…00100111100100100
31011111020211110220002
423113030010330210
5144441222431040
65334340400432
7611222002046
oct132714047444
934436743802
1012200202020
1151a0772396
1224459a6118
1311c578ca66
1483a453a96
154b6119a15
hex2d7304f24

12200202020 has 24 divisors (see below), whose sum is σ = 25625355000. Its totient is φ = 4879141632.

The previous prime is 12200202013. The next prime is 12200202061. The reversal of 12200202020 is 2020200221.

It can be written as a sum of positive squares in 4 ways, for example, as 884348644 + 11315853376 = 29738^2 + 106376^2 .

12200202020 is a modest number, since divided by 202020 gives 12200 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12200201992 and 12200202010.

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, 53006 + ... + 164954.

It is an arithmetic number, because the mean of its divisors is an integer number (1067723125).

Almost surely, 212200202020 is an apocalyptic number.

12200202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12200202020 is an abundant number, since it is smaller than the sum of its proper divisors (13425152980).

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

12200202020 is a wasteful number, since it uses less digits than its factorization.

12200202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117407 (or 117405 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 12200202020 its reverse (2020200221), we get a palindrome (14220402241).

The spelling of 12200202020 in words is "twelve billion, two hundred million, two hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 5449 10898 21796 27245 54490 108980 111949 223898 447796 559745 1119490 2238980 610010101 1220020202 2440040404 3050050505 6100101010 12200202020