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123030203221 = 991656918899
BaseRepresentation
bin111001010010100101…
…0111110101101010101
3102202120012000212212101
41302211022332231111
54003431213000341
6132304100122101
711613542321062
oct1624512765525
9382505025771
10123030203221
11481a4384702
121ba16696331
13b7a8c15223
145d51971c69
153301013831
hex1ca52beb55

123030203221 has 8 divisors (see below), whose sum is σ = 123179616000. Its totient is φ = 122880843360.

The previous prime is 123030203189. The next prime is 123030203239. The reversal of 123030203221 is 122302030321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123030203221 - 25 = 123030203189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030203281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6500430 + ... + 6519328.

It is an arithmetic number, because the mean of its divisors is an integer number (15397452000).

Almost surely, 2123030203221 is an apocalyptic number.

It is an amenable number.

123030203221 is a deficient number, since it is larger than the sum of its proper divisors (149412779).

123030203221 is an equidigital number, since it uses as much as digits as its factorization.

123030203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26459.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 123030203221 its reverse (122302030321), we get a palindrome (245332233542).

The spelling of 123030203221 in words is "one hundred twenty-three billion, thirty million, two hundred three thousand, two hundred twenty-one".

Divisors: 1 991 6569 18899 6509879 18728909 124147531 123030203221