Search a number
-
+
24220120121 = 79392978031
BaseRepresentation
bin10110100011101000…
…011011010000111001
32022111221102120201222
4112203220123100321
5344100322320441
615043201121425
71515124424051
oct264350332071
968457376658
1024220120121
11a2a96987aa
12483b329275
13238caa9632
14125a978561
1596b4c1d4b
hex5a3a1b439

24220120121 has 8 divisors (see below), whose sum is σ = 24533260800. Its totient is φ = 23907143520.

The previous prime is 24220120081. The next prime is 24220120129. The reversal of 24220120121 is 12102102242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-24220120121 is a prime.

It is a super-2 number, since 2×242201201212 (a number of 22 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 24220120121.

It is not an unprimeable number, because it can be changed into a prime (24220120129) 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, 271376 + ... + 349406.

It is an arithmetic number, because the mean of its divisors is an integer number (3066657600).

Almost surely, 224220120121 is an apocalyptic number.

It is an amenable number.

24220120121 is a deficient number, since it is larger than the sum of its proper divisors (313140679).

24220120121 is an equidigital number, since it uses as much as digits as its factorization.

24220120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82039.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 24220120121 its reverse (12102102242), we get a palindrome (36322222363).

The spelling of 24220120121 in words is "twenty-four billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-one".

Divisors: 1 79 3929 78031 310391 6164449 306583799 24220120121