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13222232123 = 15784218039
BaseRepresentation
bin11000101000001101…
…10100000000111011
31021010110221222121212
430110012310000323
5204034342411443
610024010153335
7645442055462
oct142406640073
937113858555
1013222232123
115675672771
12269012284b
1313294413b9
148d60979d9
15525bed618
hex3141b403b

13222232123 has 4 divisors (see below), whose sum is σ = 13306450320. Its totient is φ = 13138013928.

The previous prime is 13222232119. The next prime is 13222232173. The reversal of 13222232123 is 32123222231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32123222231 = 44372512917.

It is a cyclic number.

It is not a de Polignac number, because 13222232123 - 22 = 13222232119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13222232173) 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, 42108863 + ... + 42109176.

It is an arithmetic number, because the mean of its divisors is an integer number (3326612580).

Almost surely, 213222232123 is an apocalyptic number.

13222232123 is a deficient number, since it is larger than the sum of its proper divisors (84218197).

13222232123 is an equidigital number, since it uses as much as digits as its factorization.

13222232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84218196.

The product of its digits is 1728, while the sum is 23.

Adding to 13222232123 its reverse (32123222231), we get a palindrome (45345454354).

The spelling of 13222232123 in words is "thirteen billion, two hundred twenty-two million, two hundred thirty-two thousand, one hundred twenty-three".

Divisors: 1 157 84218039 13222232123