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22102213 = 714921191
BaseRepresentation
bin101010001010…
…0000011000101
31112120220112111
41110110003011
521124232323
62105421021
7355602640
oct124240305
945526474
1022102213
11115267a1
12749a771
13476b243
142d14a57
151e18c0d
hex15140c5

22102213 has 8 divisors (see below), whose sum is σ = 25430400. Its totient is φ = 18816720.

The previous prime is 22102211. The next prime is 22102217. The reversal of 22102213 is 31220122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22102213 - 21 = 22102211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102193 and 22102202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9553 + ... + 11638.

It is an arithmetic number, because the mean of its divisors is an integer number (3178800).

Almost surely, 222102213 is an apocalyptic number.

It is an amenable number.

22102213 is a deficient number, since it is larger than the sum of its proper divisors (3328187).

22102213 is a wasteful number, since it uses less digits than its factorization.

22102213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22102213 is about 4701.2990757875. The cubic root of 22102213 is about 280.6372094859.

Adding to 22102213 its reverse (31220122), we get a palindrome (53322335).

The spelling of 22102213 in words is "twenty-two million, one hundred two thousand, two hundred thirteen".

Divisors: 1 7 149 1043 21191 148337 3157459 22102213