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BaseRepresentation
bin101010001101…
…1010111111110
31112122102200221
41110123113332
521131212342
62110211554
7356056300
oct124332776
945572627
1022132222
11115472a2
1274b3bba
13477bab8
142d21970
151e22a67
hex151b5fe

22132222 has 12 divisors (see below), whose sum is σ = 38618640. Its totient is φ = 9485196.

The previous prime is 22132219. The next prime is 22132223. The reversal of 22132222 is 22223122.

It is a junction number, because it is equal to n+sod(n) for n = 22132196 and 22132205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112822 + ... + 113017.

It is an arithmetic number, because the mean of its divisors is an integer number (3218220).

Almost surely, 222132222 is an apocalyptic number.

22132222 is a deficient number, since it is larger than the sum of its proper divisors (16486418).

22132222 is a wasteful number, since it uses less digits than its factorization.

22132222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225855 (or 225848 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 22132222 is about 4704.4895578585. The cubic root of 22132222 is about 280.7641625868.

Adding to 22132222 its reverse (22223122), we get a palindrome (44355344).

The spelling of 22132222 in words is "twenty-two million, one hundred thirty-two thousand, two hundred twenty-two".