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12013000100 = 2252120130001
BaseRepresentation
bin10110011000000011…
…11101010110100100
31011000012120122010122
423030001331112210
5144100312000400
65304012141112
7603456546623
oct131401752644
934005518118
1012013000100
115105030862
1223b3167798
131195a66aaa
1481d6436ba
154a498c685
hex2cc07d5a4

12013000100 has 18 divisors (see below), whose sum is σ = 26068210434. Its totient is φ = 4805200000.

The previous prime is 12013000093. The next prime is 12013000127. The reversal of 12013000100 is 100031021.

It can be written as a sum of positive squares in 3 ways, for example, as 41576704 + 11971423396 = 6448^2 + 109414^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60064901 + ... + 60065100.

It is an arithmetic number, because the mean of its divisors is an integer number (1448233913).

Almost surely, 212013000100 is an apocalyptic number.

12013000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013000100 is an abundant number, since it is smaller than the sum of its proper divisors (14055210334).

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

12013000100 is a wasteful number, since it uses less digits than its factorization.

12013000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120130015 (or 120130008 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 12013000100 its reverse (100031021), we get a palindrome (12113031121).

The spelling of 12013000100 in words is "twelve billion, thirteen million, one hundred", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 25 50 100 120130001 240260002 480520004 600650005 1201300010 2402600020 3003250025 6006500050 12013000100