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2230111212 = 223737717539
BaseRepresentation
bin1000010011101100…
…1100101111101100
312202102100101110120
42010323030233230
514031402024322
61005143004540
7106156426650
oct20473145754
95672311416
102230111212
11a4492661a
12522a39750
13297045144
14172278a60
15d0bb8a5c
hex84eccbec

2230111212 has 48 divisors (see below), whose sum is σ = 6107700480. Its totient is φ = 619952832.

The previous prime is 2230111183. The next prime is 2230111217. The reversal of 2230111212 is 2121110322.

It is a junction number, because it is equal to n+sod(n) for n = 2230111191 and 2230111200.

It is not an unprimeable number, because it can be changed into a prime (2230111217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355662 + ... + 361877.

It is an arithmetic number, because the mean of its divisors is an integer number (127243760).

Almost surely, 22230111212 is an apocalyptic number.

It is an amenable number.

2230111212 is an abundant number, since it is smaller than the sum of its proper divisors (3877589268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2230111212 is a wasteful number, since it uses less digits than its factorization.

2230111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717590 (or 717588 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2230111212 is about 47224.0533203155. The cubic root of 2230111212 is about 1306.4982741778.

Adding to 2230111212 its reverse (2121110322), we get a palindrome (4351221534).

The spelling of 2230111212 in words is "two billion, two hundred thirty million, one hundred eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 37 42 74 84 111 148 222 259 444 518 777 1036 1554 3108 717539 1435078 2152617 2870156 4305234 5022773 8610468 10045546 15068319 20091092 26548943 30136638 53097886 60273276 79646829 106195772 159293658 185842601 318587316 371685202 557527803 743370404 1115055606 2230111212