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12210211223 = 717102606817
BaseRepresentation
bin10110101111100100…
…10000100110010111
31011111221122222221022
423113302100212113
5200001303224343
65335335111355
7611403040310
oct132762204627
934457588838
1012210211223
1151a6389461
12244921255b
1311c7885872
1483b8db607
154b6e45568
hex2d7c90997

12210211223 has 8 divisors (see below), whose sum is σ = 14775381792. Its totient is φ = 9850254336.

The previous prime is 12210211183. The next prime is 12210211231. The reversal of 12210211223 is 32211201221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12210211223 - 218 = 12209949079 is a prime.

It is a super-2 number, since 2×122102112232 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212211223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51303290 + ... + 51303527.

It is an arithmetic number, because the mean of its divisors is an integer number (1846922724).

Almost surely, 212210211223 is an apocalyptic number.

12210211223 is a deficient number, since it is larger than the sum of its proper divisors (2565170569).

12210211223 is a wasteful number, since it uses less digits than its factorization.

12210211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102606841.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12210211223 its reverse (32211201221), we get a palindrome (44421412444).

The spelling of 12210211223 in words is "twelve billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-three".

Divisors: 1 7 17 119 102606817 718247719 1744315889 12210211223