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122352213 = 31710492287
BaseRepresentation
bin1110100101011…
…11001001010101
322112020010200110
413102233021111
5222310232323
620050233233
73013655664
oct722571125
9275203613
10122352213
1163079035
1234b85819
131c46b779
141236cddb
15ab1c793
hex74af255

122352213 has 16 divisors (see below), whose sum is σ = 172972800. Its totient is φ = 76663296.

The previous prime is 122352163. The next prime is 122352221. The reversal of 122352213 is 312253221.

It is not a de Polignac number, because 122352213 - 225 = 88797781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122352213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122352313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52356 + ... + 54642.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2122352213 is an apocalyptic number.

It is an amenable number.

122352213 is a deficient number, since it is larger than the sum of its proper divisors (50620587).

122352213 is a wasteful number, since it uses less digits than its factorization.

122352213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356.

The product of its digits is 720, while the sum is 21.

The square root of 122352213 is about 11061.2934596276. The cubic root of 122352213 is about 496.4443925800. Note that the first 3 decimals are identical.

The spelling of 122352213 in words is "one hundred twenty-two million, three hundred fifty-two thousand, two hundred thirteen".

Divisors: 1 3 17 51 1049 2287 3147 6861 17833 38879 53499 116637 2399063 7197189 40784071 122352213