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122230211 = 1923212161
BaseRepresentation
bin1110100100100…
…01010111000011
322111222221022212
413102101113003
5222242331321
620043452335
73012640205
oct722212703
9274887285
10122230211
1162aa5404
1234b270ab
131c42808c
141233a775
15aae655b
hex74915c3

122230211 has 12 divisors (see below), whose sum is σ = 134511720. Its totient is φ = 110753280.

The previous prime is 122230201. The next prime is 122230217. The reversal of 122230211 is 112032221.

It is a happy number.

It is not a de Polignac number, because 122230211 - 214 = 122213827 is a prime.

It is a super-2 number, since 2×1222302112 = 29880448962209042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122230217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3971 + ... + 16131.

It is an arithmetic number, because the mean of its divisors is an integer number (11209310).

Almost surely, 2122230211 is an apocalyptic number.

122230211 is a deficient number, since it is larger than the sum of its proper divisors (12281509).

122230211 is a wasteful number, since it uses less digits than its factorization.

122230211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12226 (or 12203 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 122230211 is about 11055.7772680169. Note that the first 3 decimals coincide. The cubic root of 122230211 is about 496.2793299036.

Adding to 122230211 its reverse (112032221), we get a palindrome (234262432).

The spelling of 122230211 in words is "one hundred twenty-two million, two hundred thirty thousand, two hundred eleven".

Divisors: 1 19 23 437 529 10051 12161 231059 279703 5314357 6433169 122230211