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12210642701 = 56921459829
BaseRepresentation
bin10110101111100111…
…11001111100001101
31011111222110220210222
423113303321330031
5200001411031301
65335352241125
7611406515255
oct132763717415
934458426728
1012210642701
1151a6653654
1224493a01a5
1311c79a708a
1483b9b0965
154b6ecd31b
hex2d7cf9f0d

12210642701 has 4 divisors (see below), whose sum is σ = 12232103100. Its totient is φ = 12189182304.

The previous prime is 12210642671. The next prime is 12210642721. The reversal of 12210642701 is 10724601221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10724601221 = 14737727733.

It can be written as a sum of positive squares in 2 ways, for example, as 7581881476 + 4628761225 = 87074^2 + 68035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12210642701 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 (12210642721) 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, 10729346 + ... + 10730483.

It is an arithmetic number, because the mean of its divisors is an integer number (3058025775).

Almost surely, 212210642701 is an apocalyptic number.

It is an amenable number.

12210642701 is a deficient number, since it is larger than the sum of its proper divisors (21460399).

12210642701 is an equidigital number, since it uses as much as digits as its factorization.

12210642701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21460398.

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 12210642701 in words is "twelve billion, two hundred ten million, six hundred forty-two thousand, seven hundred one".

Divisors: 1 569 21459829 12210642701