Search a number
-
+
22212011 = 145315287
BaseRepresentation
bin101010010111…
…0110110101011
31112210111011002
41110232312223
521141241021
62112025215
7356541023
oct124566653
945714132
1022212011
11115a1238
12753220b
1347a9203
142d42a83
151e3b50b
hex152edab

22212011 has 4 divisors (see below), whose sum is σ = 22228752. Its totient is φ = 22195272.

The previous prime is 22211993. The next prime is 22212017. The reversal of 22212011 is 11021222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11021222 = 25510611.

It is a cyclic number.

It is not a de Polignac number, because 22212011 - 214 = 22195627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211983 and 22212001.

It is not an unprimeable number, because it can be changed into a prime (22212017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6191 + ... + 9096.

It is an arithmetic number, because the mean of its divisors is an integer number (5557188).

Almost surely, 222212011 is an apocalyptic number.

22212011 is a deficient number, since it is larger than the sum of its proper divisors (16741).

22212011 is a wasteful number, since it uses less digits than its factorization.

22212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22212011 is about 4712.9620197918. The cubic root of 22212011 is about 281.1011527779.

Adding to 22212011 its reverse (11021222), we get a palindrome (33233233).

The spelling of 22212011 in words is "twenty-two million, two hundred twelve thousand, eleven".

Divisors: 1 1453 15287 22212011