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12102230213 = 31390394523
BaseRepresentation
bin10110100010101100…
…10110000011000101
31011020102110222211122
423101112112003011
5144241132331323
65320520443325
7605622155003
oct132126260305
934212428748
1012102230213
115150436757
122419019545
1311ab3a9488
1482b42da73
154ac715ec8
hex2d15960c5

12102230213 has 4 divisors (see below), whose sum is σ = 12492624768. Its totient is φ = 11711835660.

The previous prime is 12102230209. The next prime is 12102230221. The reversal of 12102230213 is 31203220121.

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 12102230213 - 22 = 12102230209 is a prime.

It is a super-2 number, since 2×121022302132 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102230191 and 12102230200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102230263) 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, 195197231 + ... + 195197292.

It is an arithmetic number, because the mean of its divisors is an integer number (3123156192).

Almost surely, 212102230213 is an apocalyptic number.

It is an amenable number.

12102230213 is a deficient number, since it is larger than the sum of its proper divisors (390394555).

12102230213 is an equidigital number, since it uses as much as digits as its factorization.

12102230213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390394554.

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

Adding to 12102230213 its reverse (31203220121), we get a palindrome (43305450334).

The spelling of 12102230213 in words is "twelve billion, one hundred two million, two hundred thirty thousand, two hundred thirteen".

Divisors: 1 31 390394523 12102230213