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120131033221 = 1934742114327
BaseRepresentation
bin110111111100001011…
…1100001100010000101
3102111002010201210021201
41233320113201202011
53432012021030341
6131104252542501
711451646635313
oct1577027414205
9374063653251
10120131033221
1146a46922341
121b347781a31
13b4363a5214
145b588d50b3
1531d173a331
hex1bf85e1885

120131033221 has 16 divisors (see below), whose sum is σ = 126877570560. Its totient is φ = 113427200880.

The previous prime is 120131033207. The next prime is 120131033227. The reversal of 120131033221 is 122330131021.

It is a cyclic number.

It is not a de Polignac number, because 120131033221 - 213 = 120131025029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120131033227) 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 15 ways as a sum of consecutive naturals, for example, 27760960 + ... + 27765286.

It is an arithmetic number, because the mean of its divisors is an integer number (7929848160).

Almost surely, 2120131033221 is an apocalyptic number.

It is an amenable number.

120131033221 is a deficient number, since it is larger than the sum of its proper divisors (6746537339).

120131033221 is a wasteful number, since it uses less digits than its factorization.

120131033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8904.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 120131033221 its reverse (122330131021), we get a palindrome (242461164242).

The spelling of 120131033221 in words is "one hundred twenty billion, one hundred thirty-one million, thirty-three thousand, two hundred twenty-one".

Divisors: 1 19 347 4211 4327 6593 80009 82213 1461217 1501469 18220997 27763123 28527911 346198943 6322685959 120131033221