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12210013223 = 77377157799
BaseRepresentation
bin10110101111100011…
…00000010000100111
31011111221021221022222
423113301200100213
5200001230410343
65335330542555
7611401254122
oct132761402047
934457257288
1012210013223
1151a6263721
122449137a5b
1311c78166c5
1483b8893b9
154b6e06a68
hex2d7c60427

12210013223 has 4 divisors (see below), whose sum is σ = 12210248400. Its totient is φ = 12209778048.

The previous prime is 12210013169. The next prime is 12210013237. The reversal of 12210013223 is 32231001221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32231001221 = 41786121981.

It is a cyclic number.

It is not a de Polignac number, because 12210013223 - 224 = 12193236007 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 (12210013253) 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, 1523 + ... + 156276.

It is an arithmetic number, because the mean of its divisors is an integer number (3052562100).

Almost surely, 212210013223 is an apocalyptic number.

12210013223 is a deficient number, since it is larger than the sum of its proper divisors (235177).

12210013223 is an equidigital number, since it uses as much as digits as its factorization.

12210013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235176.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12210013223 its reverse (32231001221), we get a palindrome (44441014444).

The spelling of 12210013223 in words is "twelve billion, two hundred ten million, thirteen thousand, two hundred twenty-three".

Divisors: 1 77377 157799 12210013223