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12220121222201 is a prime number
BaseRepresentation
bin1011000111010011011111…
…1111000000110000111001
31121021020021020222210010202
42301310313333000300321
53100203302013102301
641553502435451545
72400605665354634
oct261646777006071
947236236883122
1012220121222201
113991584941062
121454411a56bb5
136a847754a9a9
143036580dcc1b
15162d17aa866b
hexb1d37fc0c39

12220121222201 has 2 divisors, whose sum is σ = 12220121222202. Its totient is φ = 12220121222200.

The previous prime is 12220121222077. The next prime is 12220121222249. The reversal of 12220121222201 is 10222212102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8595099427600 + 3625021794601 = 2931740^2 + 1903949^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220121222201 - 222 = 12220117027897 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220121242201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110060611100 + 6110060611101.

It is an arithmetic number, because the mean of its divisors is an integer number (6110060611101).

Almost surely, 212220121222201 is an apocalyptic number.

It is an amenable number.

12220121222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220121222201 is an equidigital number, since it uses as much as digits as its factorization.

12220121222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12220121222201 its reverse (10222212102221), we get a palindrome (22442333324422).

The spelling of 12220121222201 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred one".