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12302123020 = 2251161519091
BaseRepresentation
bin10110111010100001…
…11000000000001100
31011202100121121012221
423131100320000030
5200143320414040
65352421105124
7613600214605
oct133520700014
934670547187
1012302123020
115243256120
122473b581a4
131210926a45
14849bc4dac
154c004d74a
hex2dd43800c

12302123020 has 48 divisors (see below), whose sum is σ = 28190727936. Its totient is φ = 4472280000.

The previous prime is 12302122997. The next prime is 12302123027. The reversal of 12302123020 is 2032120321.

It is a junction number, because it is equal to n+sod(n) for n = 12302122985 and 12302123003.

It is not an unprimeable number, because it can be changed into a prime (12302123027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1348675 + ... + 1357765.

It is an arithmetic number, because the mean of its divisors is an integer number (587306832).

Almost surely, 212302123020 is an apocalyptic number.

12302123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12302123020 is an abundant number, since it is smaller than the sum of its proper divisors (15888604916).

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

12302123020 is a wasteful number, since it uses less digits than its factorization.

12302123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15262 (or 15260 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12302123020 its reverse (2032120321), we get a palindrome (14334243341).

The spelling of 12302123020 in words is "twelve billion, three hundred two million, one hundred twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 6151 9091 12302 18182 24604 30755 36364 45455 61510 67661 90910 100001 123020 135322 181820 200002 270644 338305 400004 500005 676610 1000010 1353220 2000020 55918741 111837482 223674964 279593705 559187410 615106151 1118374820 1230212302 2460424604 3075530755 6151061510 12302123020