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12100204445 = 57345720127
BaseRepresentation
bin10110100010011101…
…00111011110011101
31011020021200002000012
423101032213132131
5144240123020240
65320405213005
7605566016660
oct132116473635
934207602005
1012100204445
11514a28276a
122418401165
1311aab4a3b4
1482b0636d7
154ac465b65
hex2d13a779d

12100204445 has 8 divisors (see below), whose sum is σ = 16594566144. Its totient is φ = 8297283024.

The previous prime is 12100204421. The next prime is 12100204451. The reversal of 12100204445 is 54440200121.

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 12100204445 - 26 = 12100204381 is a prime.

It is a super-2 number, since 2×121002044452 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12100204445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172860029 + ... + 172860098.

It is an arithmetic number, because the mean of its divisors is an integer number (2074320768).

Almost surely, 212100204445 is an apocalyptic number.

It is an amenable number.

12100204445 is a deficient number, since it is larger than the sum of its proper divisors (4494361699).

12100204445 is an equidigital number, since it uses as much as digits as its factorization.

12100204445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345720139.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 12100204445 its reverse (54440200121), we get a palindrome (66540404566).

The spelling of 12100204445 in words is "twelve billion, one hundred million, two hundred four thousand, four hundred forty-five".

Divisors: 1 5 7 35 345720127 1728600635 2420040889 12100204445