Search a number
-
+
1200211231230 = 23251119233189491
BaseRepresentation
bin10001011101110010001…
…010100000000111111110
311020201221210011202202100
4101131302022200013332
5124131013033344410
62315211444005530
7152466232065354
oct21356212400776
94221853152670
101200211231230
11423008a50260
121747383908a6
13892442a50bb
144213a5d17d4
15213485128c0
hex117722a01fe

1200211231230 has 384 divisors, whose sum is σ = 3859868712960. Its totient is φ = 255153888000.

The previous prime is 1200211231229. The next prime is 1200211231259. The reversal of 1200211231230 is 321321120021.

1200211231230 is a `hidden beast` number, since 1 + 200 + 2 + 1 + 1 + 231 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13366785 + ... + 13456275.

It is an arithmetic number, because the mean of its divisors is an integer number (10051741440).

Almost surely, 21200211231230 is an apocalyptic number.

1200211231230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200211231230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1929934356480).

1200211231230 is an abundant number, since it is smaller than the sum of its proper divisors (2659657481730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200211231230 is a wasteful number, since it uses less digits than its factorization.

1200211231230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89588 (or 89585 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1200211231230 its reverse (321321120021), we get a palindrome (1521532351251).

The spelling of 1200211231230 in words is "one trillion, two hundred billion, two hundred eleven million, two hundred thirty-one thousand, two hundred thirty".