Search a number
-
+
12210131023201 = 18167459287421
BaseRepresentation
bin1011000110101110010010…
…0001011011010101100001
31121020021111000200002110101
42301223210201123111201
53100022322020220301
641545131243102401
72400103300153216
oct261534441332541
947207430602411
1012210131023201
113988318710751
1214524a4211a01
136a75448b2637
14302d8b3abb0d
151629309d4701
hexb1ae485b561

12210131023201 has 4 divisors (see below), whose sum is σ = 12277590310804. Its totient is φ = 12142671735600.

The previous prime is 12210131023177. The next prime is 12210131023249. The reversal of 12210131023201 is 10232013101221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115872840801 + 12094258182400 = 340401^2 + 3477680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12210131023201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210131023291) 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, 33729643530 + ... + 33729643891.

It is an arithmetic number, because the mean of its divisors is an integer number (3069397577701).

Almost surely, 212210131023201 is an apocalyptic number.

It is an amenable number.

12210131023201 is a deficient number, since it is larger than the sum of its proper divisors (67459287603).

12210131023201 is an equidigital number, since it uses as much as digits as its factorization.

12210131023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67459287602.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12210131023201 its reverse (10232013101221), we get a palindrome (22442144124422).

The spelling of 12210131023201 in words is "twelve trillion, two hundred ten billion, one hundred thirty-one million, twenty-three thousand, two hundred one".

Divisors: 1 181 67459287421 12210131023201