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1321200302123 = 13218143192007
BaseRepresentation
bin10011001110011101101…
…011001011100000101011
311200022020201110101110002
4103032131223023200223
5133121304234131443
62450541231413215
7164311401162362
oct23163553134053
94608221411402
101321200302123
1146a355143a39
1219408338420b
1397786370c00
1447d3703c7d9
152457a23b2b8
hex1339dacb82b

1321200302123 has 12 divisors (see below), whose sum is σ = 1438553018448. Its totient is φ = 1212831528480.

The previous prime is 1321200302119. The next prime is 1321200302141. The reversal of 1321200302123 is 3212030021231.

It is not a de Polignac number, because 1321200302123 - 22 = 1321200302119 is a prime.

It is a super-5 number, since 5×13212003021235 (a number of 62 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321200302095 and 1321200302104.

It is not an unprimeable number, because it can be changed into a prime (1321200302113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21565415 + ... + 21626592.

It is an arithmetic number, because the mean of its divisors is an integer number (119879418204).

Almost surely, 21321200302123 is an apocalyptic number.

1321200302123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1321200302123 is a deficient number, since it is larger than the sum of its proper divisors (117352716325).

1321200302123 is a wasteful number, since it uses less digits than its factorization.

1321200302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43192214 (or 43192201 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1321200302123 its reverse (3212030021231), we get a palindrome (4533230323354).

The spelling of 1321200302123 in words is "one trillion, three hundred twenty-one billion, two hundred million, three hundred two thousand, one hundred twenty-three".

Divisors: 1 13 169 181 2353 30589 43192007 561496091 7299449183 7817753267 101630792471 1321200302123