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12210211205 = 519128528539
BaseRepresentation
bin10110101111100100…
…10000100110000101
31011111221122222220122
423113302100212011
5200001303224310
65335335111325
7611403040253
oct132762204605
934457588818
1012210211205
1151a6389445
122449212545
1311c788585a
1483b8db5d3
154b6e45555
hex2d7c90985

12210211205 has 8 divisors (see below), whose sum is σ = 15423424800. Its totient is φ = 9254054736.

The previous prime is 12210211183. The next prime is 12210211231. The reversal of 12210211205 is 50211201221.

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 12210211205 - 230 = 11136469381 is a prime.

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, 64264175 + ... + 64264364.

It is an arithmetic number, because the mean of its divisors is an integer number (1927928100).

Almost surely, 212210211205 is an apocalyptic number.

It is an amenable number.

12210211205 is a deficient number, since it is larger than the sum of its proper divisors (3213213595).

12210211205 is a wasteful number, since it uses less digits than its factorization.

12210211205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128528563.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12210211205 its reverse (50211201221), we get a palindrome (62421412426).

The spelling of 12210211205 in words is "twelve billion, two hundred ten million, two hundred eleven thousand, two hundred five".

Divisors: 1 5 19 95 128528539 642642695 2442042241 12210211205