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12211102012211 = 157521471491509
BaseRepresentation
bin1011000110110001111001…
…1001011101001100110011
31121020100222200202102222022
42301230132121131030303
53100031314103342321
641545411450502055
72400136330345034
oct261543631351463
947210880672868
1012211102012211
11398877681a103
12145271543492b
136a766ab02a4b
14303040326a8b
1516298ad84dab
hexb1b1e65d333

12211102012211 has 8 divisors (see below), whose sum is σ = 12289123629840. Its totient is φ = 12133083482208.

The previous prime is 12211102012157. The next prime is 12211102012231. The reversal of 12211102012211 is 11221020111221.

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 12211102012211 - 230 = 12210028270387 is a prime.

It is a super-2 number, since 2×122111020122112 (a number of 27 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 12211102012211.

It is not an unprimeable number, because it can be changed into a prime (12211102012231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7441325 + ... + 8932833.

It is an arithmetic number, because the mean of its divisors is an integer number (1536140453730).

Almost surely, 212211102012211 is an apocalyptic number.

12211102012211 is a deficient number, since it is larger than the sum of its proper divisors (78021617629).

12211102012211 is a wasteful number, since it uses less digits than its factorization.

12211102012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543813.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12211102012211 its reverse (11221020111221), we get a palindrome (23432122123432).

The spelling of 12211102012211 in words is "twelve trillion, two hundred eleven billion, one hundred two million, twelve thousand, two hundred eleven".

Divisors: 1 157 52147 1491509 8187079 234166913 77777719823 12211102012211