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12420431310211 = 171595634578841
BaseRepresentation
bin1011010010111101101101…
…1001010110110110000011
31121222101022012202120102021
42310233123121112312003
53111444020403411321
642225511204102311
72421226603125421
oct264573331266603
947871265676367
1012420431310211
113a59525746a41
1214871b5394997
136c131ab8a5a2
1430d21b45c111
1516813d380941
hexb4bdb656d83

12420431310211 has 8 divisors (see below), whose sum is σ = 13151130207984. Its totient is φ = 11689741889280.

The previous prime is 12420431310149. The next prime is 12420431310269. The reversal of 12420431310211 is 11201313402421.

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

It is not a de Polignac number, because 12420431310211 - 217 = 12420431179139 is a prime.

It is a super-2 number, since 2×124204313102112 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420431314211) 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, 423151 + ... + 5001991.

It is an arithmetic number, because the mean of its divisors is an integer number (1643891275998).

Almost surely, 212420431310211 is an apocalyptic number.

12420431310211 is a deficient number, since it is larger than the sum of its proper divisors (730698897773).

12420431310211 is a wasteful number, since it uses less digits than its factorization.

12420431310211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738421.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 12420431310211 its reverse (11201313402421), we get a palindrome (23621744712632).

The spelling of 12420431310211 in words is "twelve trillion, four hundred twenty billion, four hundred thirty-one million, three hundred ten thousand, two hundred eleven".

Divisors: 1 17 159563 2712571 4578841 77840297 730613606483 12420431310211