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120201002221 is a prime number
BaseRepresentation
bin110111111110010001…
…0011011110011101101
3102111021000101120201011
41233330202123303231
53432132424032341
6131115232345221
711453456442466
oct1577442336355
9374230346634
10120201002221
1146a82372063
121b3670a5211
13b447a328b1
145b63d09d6d
1531d795bb81
hex1bfc89bced

120201002221 has 2 divisors, whose sum is σ = 120201002222. Its totient is φ = 120201002220.

The previous prime is 120201002209. The next prime is 120201002231. The reversal of 120201002221 is 122200102021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120083040900 + 117961321 = 346530^2 + 10861^2 .

It is a cyclic number.

It is not a de Polignac number, because 120201002221 - 25 = 120201002189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120201002231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60100501110 + 60100501111.

It is an arithmetic number, because the mean of its divisors is an integer number (60100501111).

Almost surely, 2120201002221 is an apocalyptic number.

It is an amenable number.

120201002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120201002221 is an equidigital number, since it uses as much as digits as its factorization.

120201002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 120201002221 its reverse (122200102021), we get a palindrome (242401104242).

The spelling of 120201002221 in words is "one hundred twenty billion, two hundred one million, two thousand, two hundred twenty-one".