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122213213 is a prime number
BaseRepresentation
bin1110100100011…
…01001101011101
322111222002000022
413102031031131
5222241310323
620043241525
73012536513
oct722151535
9274862008
10122213213
1162a93661
1234b192a5
131c420415
14123344b3
15aae14c8
hex748d35d

122213213 has 2 divisors, whose sum is σ = 122213214. Its totient is φ = 122213212.

The previous prime is 122213173. The next prime is 122213261. The reversal of 122213213 is 312312221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121837444 + 375769 = 11038^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 122213213 - 28 = 122212957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122213191 and 122213200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122213713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106606 + 61106607.

It is an arithmetic number, because the mean of its divisors is an integer number (61106607).

Almost surely, 2122213213 is an apocalyptic number.

It is an amenable number.

122213213 is a deficient number, since it is larger than the sum of its proper divisors (1).

122213213 is an equidigital number, since it uses as much as digits as its factorization.

122213213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 122213213 is about 11055.0085029366. The cubic root of 122213213 is about 496.2563237334.

Adding to 122213213 its reverse (312312221), we get a palindrome (434525434).

The spelling of 122213213 in words is "one hundred twenty-two million, two hundred thirteen thousand, two hundred thirteen".