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120202001281 is a prime number
BaseRepresentation
bin110111111110010011…
…0001111101110000001
3102111021002021100011101
41233330212033232001
53432133203020111
6131115310014401
711453501103265
oct1577446175601
9374232240141
10120202001281
1146a8299472a
121b3674a7401
13b447cc255b
145b640ca0a5
1531d7aa7bc1
hex1bfc98fb81

120202001281 has 2 divisors, whose sum is σ = 120202001282. Its totient is φ = 120202001280.

The previous prime is 120202001237. The next prime is 120202001291. The reversal of 120202001281 is 182100202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117693594225 + 2508407056 = 343065^2 + 50084^2 .

It is a cyclic number.

It is not a de Polignac number, because 120202001281 - 229 = 119665130369 is a prime.

It is a super-2 number, since 2×1202020012812 (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120202001291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60101000640 + 60101000641.

It is an arithmetic number, because the mean of its divisors is an integer number (60101000641).

Almost surely, 2120202001281 is an apocalyptic number.

It is an amenable number.

120202001281 is a deficient number, since it is larger than the sum of its proper divisors (1).

120202001281 is an equidigital number, since it uses as much as digits as its factorization.

120202001281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 120202001281 in words is "one hundred twenty billion, two hundred two million, one thousand, two hundred eighty-one".