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12401103205 = 518111369531
BaseRepresentation
bin10111000110010100…
…11101000101100101
31012000020212022111201
423203022131011211
5200344140300310
65410314402501
7616211431561
oct134312350545
935006768451
1012401103205
115294110427
1224a1130431
1312282a12ba
14858dcc6a1
154c8aa0e3a
hex2e329d165

12401103205 has 8 divisors (see below), whose sum is σ = 14889551904. Its totient is φ = 9915397200.

The previous prime is 12401103191. The next prime is 12401103229. The reversal of 12401103205 is 50230110421.

12401103205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12401103205 - 211 = 12401101157 is a prime.

It is a super-2 number, since 2×124011032052 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675711 + ... + 693820.

It is an arithmetic number, because the mean of its divisors is an integer number (1861193988).

Almost surely, 212401103205 is an apocalyptic number.

It is an amenable number.

12401103205 is a deficient number, since it is larger than the sum of its proper divisors (2488448699).

12401103205 is a wasteful number, since it uses less digits than its factorization.

12401103205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371347.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 12401103205 its reverse (50230110421), we get a palindrome (62631213626).

The spelling of 12401103205 in words is "twelve billion, four hundred one million, one hundred three thousand, two hundred five".

Divisors: 1 5 1811 9055 1369531 6847655 2480220641 12401103205