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120220202221 = 7478922917929
BaseRepresentation
bin110111111110110101…
…1101011010011101101
3102111022100112001011021
41233331223223103231
53432202332432341
6131121200054141
711454111600250
oct1577553532355
9374270461137
10120220202221
1146a92196329
121b371604351
13b44b9c5b42
145b666a7097
1531d94a09d1
hex1bfdaeb4ed

120220202221 has 32 divisors (see below), whose sum is σ = 142521984000. Its totient is φ = 99279240192.

The previous prime is 120220202111. The next prime is 120220202231. The reversal of 120220202221 is 122202022021.

It is a cyclic number.

It is not a de Polignac number, because 120220202221 - 217 = 120220071149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120220202195 and 120220202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220202231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6696385 + ... + 6714313.

It is an arithmetic number, because the mean of its divisors is an integer number (4453812000).

Almost surely, 2120220202221 is an apocalyptic number.

It is an amenable number.

120220202221 is a deficient number, since it is larger than the sum of its proper divisors (22301781779).

120220202221 is a wasteful number, since it uses less digits than its factorization.

120220202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18301.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 120220202221 its reverse (122202022021), we get a palindrome (242422224242).

The spelling of 120220202221 in words is "one hundred twenty billion, two hundred twenty million, two hundred two thousand, two hundred twenty-one".

Divisors: 1 7 47 89 229 329 623 1603 4183 10763 17929 20381 29281 75341 125503 142667 842663 957907 1595681 4105741 5898641 6705349 11169767 28740187 74997007 192969827 365410949 524979049 1350788789 2557876643 17174314603 120220202221