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12002010002020 = 225600100500101
BaseRepresentation
bin1010111010100110111110…
…0010101111001001100100
31120111101021201020210012201
42232221233202233021210
53033120104030031040
641305351451224244
72346054665522503
oct256515742571144
946441251223181
1012002010002020
1139080298330a5
12141a0a0a48084
13690a27c596ac
142d6c8691c83a
1515c2ee60ba9a
hexaea6f8af264

12002010002020 has 12 divisors (see below), whose sum is σ = 25204221004284. Its totient is φ = 4800804000800.

The previous prime is 12002010002009. The next prime is 12002010002051. The reversal of 12002010002020 is 2020001020021.

It can be written as a sum of positive squares in 2 ways, for example, as 1603500494436 + 10398509507584 = 1266294^2 + 3224672^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12002010001988 and 12002010002006.

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, 300050250031 + ... + 300050250070.

It is an arithmetic number, because the mean of its divisors is an integer number (2100351750357).

Almost surely, 212002010002020 is an apocalyptic number.

12002010002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002010002020 is an abundant number, since it is smaller than the sum of its proper divisors (13202211002264).

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

12002010002020 is a wasteful number, since it uses less digits than its factorization.

12002010002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600100500110 (or 600100500108 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12002010002020 its reverse (2020001020021), we get a palindrome (14022011022041).

The spelling of 12002010002020 in words is "twelve trillion, two billion, ten million, two thousand, twenty".

Divisors: 1 2 4 5 10 20 600100500101 1200201000202 2400402000404 3000502500505 6001005001010 12002010002020