Base | Representation |
---|---|
bin | 11010011101111… |
… | …00011000000000 |
3 | 120110202211201110 |
4 | 31032330120000 |
5 | 423314133440 |
6 | 34010403320 |
7 | 5334101616 |
oct | 1516743000 |
9 | 513684643 |
10 | 222021120 |
11 | 104363832 |
12 | 62430540 |
13 | 36cc7659 |
14 | 216b56b6 |
15 | 14759080 |
hex | d3bc600 |
222021120 has 80 divisors (see below), whose sum is σ = 709798320. Its totient is φ = 59203584.
The previous prime is 222021113. The next prime is 222021131. The reversal of 222021120 is 21120222.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 222021096 and 222021105.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6775 + ... + 22134.
It is an arithmetic number, because the mean of its divisors is an integer number (8872479).
Almost surely, 2222021120 is an apocalyptic number.
222021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
222021120 is an abundant number, since it is smaller than the sum of its proper divisors (487777200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
222021120 is an equidigital number, since it uses as much as digits as its factorization.
222021120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28935 (or 28919 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 12.
The square root of 222021120 is about 14900.3731496899. The cubic root of 222021120 is about 605.5240956389.
Adding to 222021120 its reverse (21120222), we get a palindrome (243141342).
The spelling of 222021120 in words is "two hundred twenty-two million, twenty-one thousand, one hundred twenty".
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