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2020122197 is a prime number
BaseRepresentation
bin111100001101000…
…1001111001010101
312012210012211200122
41320122021321111
513114122402242
6532242121325
7101026520042
oct17032117125
95183184618
102020122197
11947340785
12484650245
132626a12a2
141524161c9
15bc539ad2
hex78689e55

2020122197 has 2 divisors, whose sum is σ = 2020122198. Its totient is φ = 2020122196.

The previous prime is 2020122191. The next prime is 2020122227. The reversal of 2020122197 is 7912210202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1377448996 + 642673201 = 37114^2 + 25351^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020122197 - 26 = 2020122133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020122191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010061098 + 1010061099.

It is an arithmetic number, because the mean of its divisors is an integer number (1010061099).

Almost surely, 22020122197 is an apocalyptic number.

It is an amenable number.

2020122197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020122197 is an equidigital number, since it uses as much as digits as its factorization.

2020122197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2020122197 is about 44945.7695117127. The cubic root of 2020122197 is about 1264.1323544593.

Adding to 2020122197 its reverse (7912210202), we get a palindrome (9932332399).

The spelling of 2020122197 in words is "two billion, twenty million, one hundred twenty-two thousand, one hundred ninety-seven".