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12220203202 = 26421951581
BaseRepresentation
bin10110110000110000…
…11000000011000010
31011112122110122100121
423120120120003002
5200011333000302
65340333210454
7611554004404
oct133030300302
934478418317
1012220203202
115200a93599
122450630a2a
1311c997388c
1483cd7cb74
154b7c6ae37
hex2d86180c2

12220203202 has 8 divisors (see below), whose sum is σ = 18333178812. Its totient is φ = 6109143600.

The previous prime is 12220203197. The next prime is 12220203221. The reversal of 12220203202 is 20230202221.

It can be written as a sum of positive squares in 2 ways, for example, as 9613998601 + 2606204601 = 98051^2 + 51051^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462949 + ... + 488632.

Almost surely, 212220203202 is an apocalyptic number.

12220203202 is a deficient number, since it is larger than the sum of its proper divisors (6112975610).

12220203202 is an equidigital number, since it uses as much as digits as its factorization.

12220203202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958004.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 12220203202 its reverse (20230202221), we get a palindrome (32450405423).

The spelling of 12220203202 in words is "twelve billion, two hundred twenty million, two hundred three thousand, two hundred two".

Divisors: 1 2 6421 12842 951581 1903162 6110101601 12220203202