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2214504221 = 7928031699
BaseRepresentation
bin1000001111111110…
…1010011100011101
312201022222110200212
42003333222130131
514013403113341
61003424302205
7105606655346
oct20377523435
95638873625
102214504221
11a37036886
12519771965
13293a3c437
141701750cd
15ce6345eb
hex83fea71d

2214504221 has 4 divisors (see below), whose sum is σ = 2242536000. Its totient is φ = 2186472444.

The previous prime is 2214504203. The next prime is 2214504287. The reversal of 2214504221 is 1224054122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1224054122 = 2612027061.

It is a cyclic number.

It is not a de Polignac number, because 2214504221 - 26 = 2214504157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2214504521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14015771 + ... + 14015928.

It is an arithmetic number, because the mean of its divisors is an integer number (560634000).

Almost surely, 22214504221 is an apocalyptic number.

It is an amenable number.

2214504221 is a deficient number, since it is larger than the sum of its proper divisors (28031779).

2214504221 is an equidigital number, since it uses as much as digits as its factorization.

2214504221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28031778.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2214504221 is about 47058.5191118463. The cubic root of 2214504221 is about 1303.4433803523.

Adding to 2214504221 its reverse (1224054122), we get a palindrome (3438558343).

The spelling of 2214504221 in words is "two billion, two hundred fourteen million, five hundred four thousand, two hundred twenty-one".

Divisors: 1 79 28031699 2214504221