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120212044021 = 1315711160681
BaseRepresentation
bin110111111110100110…
…0100011100011110101
3102111021210011120012201
41233331030203203311
53432143240402041
6131120305144501
711453652341356
oct1577514434365
9374253146181
10120212044021
1146a88623a13
121b36a92b131
13b44a0ca6c4
145b65581d2d
1531d88dd631
hex1bfd3238f5

120212044021 has 8 divisors (see below), whose sum is σ = 121151657088. Its totient is φ = 119272764000.

The previous prime is 120212044009. The next prime is 120212044027. The reversal of 120212044021 is 120440212021.

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 120212044021 - 27 = 120212043893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120212044021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212044027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667801 + ... + 828481.

It is an arithmetic number, because the mean of its divisors is an integer number (15143957136).

Almost surely, 2120212044021 is an apocalyptic number.

It is an amenable number.

120212044021 is a deficient number, since it is larger than the sum of its proper divisors (939613067).

120212044021 is a wasteful number, since it uses less digits than its factorization.

120212044021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166523.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 120212044021 its reverse (120440212021), we get a palindrome (240652256042).

The spelling of 120212044021 in words is "one hundred twenty billion, two hundred twelve million, forty-four thousand, twenty-one".

Divisors: 1 131 5711 160681 748141 21049211 917649191 120212044021