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12230102021 = 78467155863
BaseRepresentation
bin10110110001111100…
…01000110000000101
31011120100002112222112
423120332020300011
5200021401231041
65341325310405
7612034103054
oct133076106005
934510075875
1012230102021
115206634735
122453a05405
1311cba2b377
148403d839b
154b8a73deb
hex2d8f88c05

12230102021 has 4 divisors (see below), whose sum is σ = 12230336352. Its totient is φ = 12229867692.

The previous prime is 12230102009. The next prime is 12230102029. The reversal of 12230102021 is 12020103221.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12230102021 - 26 = 12230101957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12230101987 and 12230102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230102029) 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, 536 + ... + 156398.

It is an arithmetic number, because the mean of its divisors is an integer number (3057584088).

Almost surely, 212230102021 is an apocalyptic number.

It is an amenable number.

12230102021 is a deficient number, since it is larger than the sum of its proper divisors (234331).

12230102021 is an equidigital number, since it uses as much as digits as its factorization.

12230102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234330.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12230102021 its reverse (12020103221), we get a palindrome (24250205242).

The spelling of 12230102021 in words is "twelve billion, two hundred thirty million, one hundred two thousand, twenty-one".

Divisors: 1 78467 155863 12230102021