Search a number
-
+
12212012201 = 29974341277
BaseRepresentation
bin10110101111110010…
…01000010010101001
31011112002001111102012
423113321020102221
5200002233342301
65335441445305
7611424251054
oct132771102251
934462044365
1012212012201
1151a73a9574
122449940835
1311c806652c
1483bc49a9b
154b719debb
hex2d7e484a9

12212012201 has 8 divisors (see below), whose sum is σ = 12763357320. Its totient is φ = 11669349888.

The previous prime is 12212012179. The next prime is 12212012221. The reversal of 12212012201 is 10221021221.

12212012201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4516512025 + 7695500176 = 67205^2 + 87724^2 .

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 12212012201 - 210 = 12212011177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12212012221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167826 + ... + 2173451.

It is an arithmetic number, because the mean of its divisors is an integer number (1595419665).

Almost surely, 212212012201 is an apocalyptic number.

It is an amenable number.

12212012201 is a deficient number, since it is larger than the sum of its proper divisors (551345119).

12212012201 is an equidigital number, since it uses as much as digits as its factorization.

12212012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341403.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12212012201 its reverse (10221021221), we get a palindrome (22433033422).

The spelling of 12212012201 in words is "twelve billion, two hundred twelve million, twelve thousand, two hundred one".

Divisors: 1 29 97 2813 4341277 125897033 421103869 12212012201