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1223120213013 = 361127439711969
BaseRepresentation
bin10001110011000111101…
…001010101010000010101
311022221002100110121211010
4101303013221111100111
5130014422233304023
62333521011002433
7154240026161616
oct21630751252025
94287070417733
101223120213013
114317a4523356
12179070599419
138b455546a1a
14432b0d89c0d
1521c39844093
hex11cc7a55415

1223120213013 has 32 divisors (see below), whose sum is σ = 1671133040640. Its totient is φ = 795483279360.

The previous prime is 1223120212981. The next prime is 1223120213023. The reversal of 1223120213013 is 3103120213221.

It is not a de Polignac number, because 1223120213013 - 25 = 1223120212981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223120213023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102184693 + ... + 102196661.

It is an arithmetic number, because the mean of its divisors is an integer number (52222907520).

Almost surely, 21223120213013 is an apocalyptic number.

It is an amenable number.

1223120213013 is a deficient number, since it is larger than the sum of its proper divisors (448012827627).

1223120213013 is a wasteful number, since it uses less digits than its factorization.

1223120213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16557.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1223120213013 its reverse (3103120213221), we get a palindrome (4326240426234).

The spelling of 1223120213013 in words is "one trillion, two hundred twenty-three billion, one hundred twenty million, two hundred thirteen thousand, thirteen".

Divisors: 1 3 61 127 183 381 4397 7747 11969 13191 23241 35907 268217 558419 730109 804651 1520063 1675257 2190327 4560189 34063559 52627693 92723843 102190677 157883079 278171529 3210289273 6683717011 9630867819 20051151033 407706737671 1223120213013